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Home My WebLink About20240774.tiffNOTICE OF FILING APPLICATION FOR COLORADO MINED LAND RECLAMATION PERMIT FOR REGULAR (112) CONSTRUCTION MATERIALS EXTRACTION OPERATION NOTICE TO THE BOARD OF COUNTY COMMISSIONERS Weld COUNTY Central Colorado Water Conservancy District (the "Applicant/Operator") has applied for a Regular (112) reclamation permit from the Colorado Mined Land Reclamation Board (the "Board") to conduct the extraction of construction materials operations in Weld County. The attached information is being provided to notify you of the location and nature of the proposed operation. The entire application is on file with the Division of Reclamation, Mining, and Safety (the "Division") and the local county clerk and recorder. The applicant/operator proposes to reclaim the affected land to Developed Water Resource use. Pursuant to Section 34-32.5-116(4)(m), C.R.S., the Board may confer with the local Board of County Commissioners before approving of the post -mining land use. Accordingly, the Board would appreciate your comments on the proposed operation. Please note that, in order to preserve your right to a hearing before the Board on this application, you must submit written comments on the application within twenty (20) days of the date of last publication of notice pursuant to Section 34-32.5-112(10), C.R.S. If you would like to discuss the proposed post -mining land use, or any other issue regarding this application, please contact the Division of Reclamation, Mining, and Safety, 1313 Sherman Street, Room 215, Denver, Colorado 80203, (303) 866-3567. NOTE TO APPLICANT/OPERATOR: You must attach a copy of the application form to this notice. If this is a notice of a change to a previously filed application you must either attach a copy of the changes, or attach a complete and accurate description of the change. RECEIVED _' M4 WELD COUNTY COMMISSIONERS Rtb 1; c. -F e,v i e 1411b I Z4 CC.' M1J�r�(�-�KDD,q/, (_CA-t(C tttJtDtLI,I5B) c4loci/ ZL4 2024-0774 Application for: DRMS 112 Reclamation Operation Sweet Valley Pit M. Central Colorado Water Conservancy District 3209 West 28th Street Greeley, CO 80634 Phone: 970-330-4540 Prepared By: LIJ&T Consulting, Inc. 305 Denver Avenue — Suite D Fort Lupton, CO 80621 Ph: 303-857-6222 www.j-tconsulting.com STATE OF COLORADO DIVISION OF RECLAMATION, MINING AND SAFETY Department of Natural Resources 1313 Sherman St., Room 215 Denver, Colorado 80203 Phone: (303) 866-3567 FAX: (303) 832-8106 RECEIVED APR 0 3 2024 WELD COUNTY COMMISSIONERS CONSTRUCTION MATERIALS REGULAR (112) OPERATION RECLAMATION PERMIT APPLICATION FORM CHECK ONE: n There is a File Number Already Assigned to this Operation Permit # M - COLORADO DIVISION OF RECLAMATION MINING —&— SAFETY (Please reference the file number currently assigned to this operation) New Application (Rule 1.4.5) i f Amendment Application (Rule 1.10) Conversion Application (Rule 1.11) Permit # M - (provide for Amendments and Conversions of existing permits) The application for a Construction Materials Regular 112 Operation Reclamation Permit contains three major parts: (1) the application form; (2) Exhibits A -S, Addendum 1, any sections of Exhibit 6.5 (Geotechnical Stability Exhibit; and (3) the application fee. When you submit your application, be sure to include one (1) complete signed and notarized ORIGINAL and one (1) copy of the completed application form, two (2) copies of Exhibits A -S, Addendum 1, appropriate sections of 6.5 (Geotechnical Stability Exhibit, and a check for the application fee described under Section (4) below. Exhibits should NOT be bound or in a 3 -ring binder; maps should be folded to 8 1/2" X 11" or 8 1/2" X 14" size. To expedite processing, please provide the information in the format and order described in this form. GENERAL OPERATION INFORMATION Type or print clearly, in the space provided, ALL information requested below. 1. Applicant/operator or company name (name to be used on permit]: Central Colorado Water Conservancy District 1.1 Type of organization (corporation, partnership, etc.): 2. Operation name (pit. mine or site name): Sweet Valley Pit 3. Permitted acreage (new or existing site): 3.1 Change in acreage (+) 3.2 Total acreage in Permit area 4. Fees: 4.1 New Application 4.2 New Quarry Application 4.4 Amendment Fee 4.5 Conversion to 112 operation (set by statute) 5. Primary commoditie(s) to be mined: Sand Gravel 147.83 $2,696.00 $3,342.00 $2,229.00 $2,696.00 permitted acres acres acres application fee quarry application amendment fee conversion fee 5.1 Incidental commoditie(s) to be mined: I . lbs/Tons/vr 2. / lbs/Tons/yr 3. / lbs/Tons/vr 4. / lbs/Tons/yr 5. / lbs/Tons/yr 5.2 Construction Aggregates 5.3 Anticipated end use of incidental commoditie(s) to be mined: N/A Anticipated end use of primary commoditie(s) to be mined: -2- 6. Name of owner of subsurface rights of affected land: Central Colorado Water Conservancy District If 2 or more owners, "refer to Exhibit O". 7. Name of owner of surface of affected land: Central Colorado Water Conservancy District 8. Type of mining operation: 171 Surface Underground 9. Location Information: The center of the area where the majority of mining will occur: COUNTY: Weld PRINCIPAL MERIDIAN (check one): 1� SECTION (write number): TOWNSHIP (write number and check direction): RANGE (write number and check direction): QUARTER SECTION (check one): QUARTER/QUARTER SECTION (check one): 6th (Colorado) n 10th (New Mexico) E Ute S 30 T 4 f1 North Q South R 66 n. East n West EEN n 'r n SW NE IINW I'SE I' 'SW GENERAL DESCRIPTION: (the number of miles and direction from the nearest town and the approximate elevation): Approximately 1.25 miles East of Gilcrest. Elevation 4755.00. 10. Primary Mine Entrance Location (report in either Latitude/Longitude OR UTM): L.at itude/L.on citude: Example: (N) 39° 44' 12.98" (W) 104° 59' 3.87" Latitude (N): deg 40 min 16 sec Longitude (W): deg 104 min 48 OR Example: (N) 39.73691° (W) -104.98449° Latitude (N) _ Longitude(W) OR Universal Tranverse Mercator (UTM) Example: 201336.3 E NAD27 Zone 13 4398351.2 N 57 .47 (2 decimal places) sec 57 ,15 (5 decimal places) (5 decimal places) UTM Datum (specify NAD27, NAD83 or WGS 84) Nad 83 Easting Northing (2 decimal places) 13 Zone -3- 11. Correspondence information: APPLICANT/OPERATOR (name, address, and phone of name to be used on permit) Contact's Name: Company Name: Street/P.O. Box: City: State: Telephone Number: Randy Ray Central Colorado Water Conservancy District Title: Executive Director 3209 W. 28th Street Greeley P.O. Box: CO (970 ) - 330-4540 Zip Code: 80634 Fax Number: ( ) - PERMfTTING CONTACT (if different from applicant/operator above) Contact's Name: J.C. York Title: Principal/Owner Company Name: Street/P.O. Box: City: State: J&T Consulting, Inc. 305 Denver Avenue, Suite D Fort Lupton P.O. Box: CO Telephone Number: (303 y _ 857-6222 Zip Code: 80621 Fax Number: ( ) - INSPECTION CONTACT Contact's Name: Title: Company Name: Street/P.O. Box: P.O. Box: City: State: Zip Code: Telephone Number: ( ) - Fax Number: CC: STATE OR FEDERAL LANDOWNER (if aux) Agency: Street: City: State: N/A Zip Code: Telephone Number: { I - CC: STATE OR FEDERAL LANDOWNER (if any) Agency: Street: City: N/A State: Zip Code: Telephone Number: ( ) - -4- 12. Primary future (Post -milling) land use (check one): Cropland(CR) f 7 Pastureland(PL) Rangeland(RL) JI Forestry(FR) Residential(RS) J- -I Recreation(RC) 11 Developed Water Resources(WR) 13. Primary present land use (check one : O Cropland(CR) Pastureland(PL) n Rangeland(RL) Forestry(FR) RResidential(RS) Recreation(RC) Developed Water Resources(WR) General Agriculture(GA) Wildlife Habitat(WL) Industrial/Commercial(IC) Solid Waste Disposal(WD) General Agriculture(GA) Wildlife Habitat(WL) Industrial/Commercial(IC) 14. Method of Mining: Briefly explain mining method (e.g. truck/shovel): Excavation by Excavator, Loader, or Dozer and taken to processing area via haul trucks and/or conveyor. 15. On Site Processing: Crushing/Screening 13.1 Briefly explain mining method (e.g. truck/shovel): On -site crushing/screening fed by loader. List any designated chemicals or acid -producing materials to be used or stored within permit area: 16. Description of Amendment or Conversion: If you are amending or converting an existing operation, provide a brief narrative describing the proposed change(s). N/A -5 - Maps and Exhibits: Two (2) complete, unbound application packages must be submitted. One complete application package consists of a signed application form and the set of maps and exhibits referenced below as Exhibits A -S, Addendum 1, and the Geotechnical Stability Exhibit. Each exhibit within the application must be presented as a separate section. Begin each exhibit on a new page. Pages should be numbered consecutively for ease of reference. If separate documents are used as appendices, please reference these by name in the exhibit. With each of the two (2) signed application forms, you must submit a corresponding set of the maps and exhibits as described in the following references to Rule 6.4, 6.5, and 1.6.2(1Xb): EXHIBIT A EXHIBIT B EXHIBIT C EXHIBIT D EXHIBIT E EXHIBIT F EXHIBIT G EXHIBIT H EXHIBIT I EXHIBIT I EXHIBIT K EXHIBIT L EXHIBIT M EXHIBIT N EXHIBIT O EXHIBIT P EXHIBIT Q EXHIBIT R EXHIBIT S Rule 1.6.2(I)(b) Rule 6.5 Legal Description Index Map Pre -Mining and Mining Plan Map(s) of Affected Lands Mining Plan Reclamation Plan Reclamation Plan Map Water Information Wildlife Information Soils Information Vegetation Information Climate Information Reclamation Costs Other Pennits and Licenses Source of Legal Right -To -Enter Owners of Record of Affected Land (Surface Area) and Owners of Substance to be Mined Municipalities Within Two Miles Proof of Mailing of Notices to County Commissioners and Conservation District Proof of Filing with County Clerk or Recorder Permanent Man -Made Structures ADDENDUM 1 - Notice Requirements (sample enclosed) Geotechnical Stability Exhibit (any required sections) The instructions for preparing Exhibits A -S, Addendum 1, and Geotechnical Stability Exhibit are specified under Rule 6.4 and 6.5 and Rule 1.6.2(1)(b) of the Rules and Regulations. If you have any questions on preparing the Exhibits or content of the information required, or would like to schedule a pre -application meeting you may contact the Office at 303-866-3567. Responsibilities as a Perrnittee: Upon application approval and permit issuance, this application becomes a legally binding document. Therefore, there are a number of important requirements which you, as a permittee, should fully understand. These requirements are listed below. Please read and initial each requirement, in the space provided, to acknowledge that you understand your obligations. If you do not understand these obligations then please contact this Office for a full explanation. Aix - 1. Your obligation to reclaim the site is not limited to the amount of the financial warranty. You assume legal liability for all reasonable expenses which the Board or the Office may incur to reclaim the affected lands associated with your mining operation in the event your permit is revoked and financial warranty is forfeited; -6- Pag- 2. The Board may suspend or revoke this permit, or assess a civil penalty, upon a finding that the permittee violated the terms or conditions of this permit, the Act, the Mineral Rules and Regulations, or that information contained in the application or your permit misrepresent important material facts; 3. If your mining and reclamation operations affect areas beyond the boundaries of an approved permit boundary, substantial civil penalties, to you as permittee can result; 4. Any modification to the approved mining and reclamation plan from those described in your approved application requires you to submit a permit modification and obtain approval from the Board or Office; 5. It is your responsibility to notify the Office of any changes in your address or phone number; ice. 6. Upon permit issuance and prior to beginning on -site mining activity, you must post a sign at the entrance of the mine site, which shall be dearly visible from the access road, with the following information (Rule 3.1.I2): a. the name of the operator; b. a statement that a reclamation permit for the operation has been issued by the Colorado Mined Land Reclamation Board; and, c. the permit number. T- 7. The boundaries of the permit boundary area must be marked by monuments or other markers that are clearly visible and adequate to delineate such boundaries prior to site disturbance. 10. For joint venturelpartnership operators: the signing representative is authorized to sign this document and a power of attorney (provided by the partner(s)) authorizing the signature of the representative is attached to this application. County of We_ 1d -8- Certification: As an authorized representative of the applicant, 1 hereby certify that the operation described has met the minimum requirements of the following terms and conditions: 1. To the best of my knowledge, aII significant, valuable and permanent man-made structure(s) in existence at the time this application is filed, and located within 200 feet of the proposed affected area have been identified in this application (Section 34-32.5-115(4)(e), C.R.S.). 2. No mining operation will be located on lands where such operations are prohibited by law (Section 34-32.5-115(4)(f), C.R.S.; 3. As the applicant/operator, I do not have any extraction/exploration operations in the State of Colorado currently in violation of the provisions of the Colorado Land Reclamation Act for the Extraction of Construction Materials (Section 34-32.5-120, C.R.S.) as determined through a Board finding. 4. I understand that statements in the application are being made under penalty of perjury and that false statements made herein are punishable as a Class 1 misdemeanor pursuant to Section 18-8-503, C.R.S. This farm has been approved by the Mined Land Reclamation Board pursuant to section 34-32.5-112,C.R;S, of the Colorado Land Reclamation Act for the Extraction of Construction Materials. Any alteration or modification of this form shall result in voiding any permit issued on the altered or modified form and subject the operator to cease and desist orders and civil penalties for operating without a permit pursuant to section 34-32.5-123, C.R.S. Signed and dated this ime day of 4/'i, , AV,1 . (,4J / ,/,r if p rttr,?" /jn, d) /ST If Corporation Attest (Seal) Applicant/Operator or Company Name Signed Title: Executive Director State of ep) fa10 ) ) ss. Signed: AID Jle4 The foregoing instrument w acknowledged before me this ,( day of by 4!}r as h —ye e Lc �.'tirA ' ya7 "e I rlSar-4P62c✓ Corporate Secretary or Equivalent Town/City/County Clerk LYNN KRAMER NOTARY PUBLIC STATE OF COLORADO NOTARY ID 20034018159 MY COMMISSION EXPIRES JUNE 2.202 y Commission expires: J1/1O'..1 • AV 7 Public SIGNATURES MUST BE IN BLUE INK You must post sufficient Notices at the location of the proposed mine site to clearly identify the site as the location of a EXHIBIT A Legal Description A parcel of land situated in the Northeast' of Section 30, Township 4 North, Range 66 West of the 6th Principal Meridian, in Weld County, Colorado, more particularly described as follows: The TRUE POINT OF BEGINNING being the Southeast corner of the Northeast' of the Northeast' of said Section 30; Thence, S 89° 44' 30.3" W for a distance of 2664.99 feet to a point on a line. Thence, N 00° 37' 44.5" W for a distance of 2664.83 feet to a point on a line. Thence, S 89° 59' 11.9" E for a distance of 1437.47 feet to a point on a line. Thence, S 01° 34' 04.0" W for a distance of 1184.17 feet to a point on a line. Thence, N 46° 41' 09.0" E for a distance of 141.08 feet to a point on a line. Thence, N 38° 55' 49.0" E for a distance of 101.05 feet to a point on a line. Thence, N 32° 32' 59.0" E for a distance of 91.98 feet to a point on a line. Thence, N 21° 51' 40.0" E for a distance of 100.04 feet to a point on a line. Thence, N 19° 13' 38.0" E for a distance of 146.21 feet to a point on a line. Thence, N 24° 57' 54.0" E for a distance of 338.87 feet to a point on a line. Thence, N 25° 15' 36.0" E for a distance of 133.11 feet to a point on a line. Thence, N 27° 58' 44.0" E for a distance of 161.23 feet to a point on a line. Thence, N 06° 35' 05.0" E for a distance of 130.66 feet to a point on a line. Thence, S 89° 59' 11.9" E for a distance of 666.12 feet to a point on a line. thence S 00° 40' 53.0" E a distance of 2652.22 feet to the TRUE POINT OF BEGINNING. The proposed mine entrance coordinates are as follows: Latitude: (N) 40° 16' 57.47" Longitude: (W) 104° 48' 57.15" UT Consulting, Inc. Central Colorado Water Conservancy District Sweet Valley Pit DRMS 112 Permit Application EXHIBIT B Vicinity Map See attached map. tri J&T Consulting, Inc. Central Colorado Water Conservancy District Sweet Valley Pit DRMS 112 Permit Application P:\22009 Central Feasibility Studies\Drawings\Plan Sheets\Mining PIan\JT-Mining Plan.dwg, Vicinity Map, 3/8/2024 8:52:12 AM CR 42 WESTERN MUTUAL DITCH //1. -.4. -SITE CR 40 CV LO CV CC O 0 cD O O LEGEND: V77//////A CR 38.5 PERMIT BOUNDARY MINING LIMIT DITCH LIMITS SITE rn cv cc 0 GILCREST 2000 1000 0 2000 SCALE IN FEET id' J&T Consulting, Inc. 305 Denver Avenue - Suite D Fort Lupton, CO 80621 303-857-6222 CCWCD Sweet Valley Pit Exhibit B Index Map Date: 03.08.24 Job No: 23038 Drawn: TWT Scale: 1" = 2000' Sheet: 1 Of: 1 EXHIBIT C Pre-Mining/Mining Plan Map See attached maps. V! UT Consulting, Inc. Central Colorado Water Conservancy District Sweet Valley Pit DRMS 112 Permit Application 3/28/20242 52 21 PM s\Plan Sheers\Mining PIanLIT-Mining Plan dwg, 1 -Pre -Min R}X, N0. 11;7M1 EMPAN300.. -CAM oannc.ua mac, •GIFWICAD B]117C9C UNE us UK DELTIC 1EOR mu.WL G2iWC i GS.iN� EXISTING WESTERN 1.31.EMM. u 'ii]5TRN A W.V- EL • TER 194 13T PIPEUNE I AR WIG NO 2,130-161, craw reg Ong 30• n.o.4 MXWONA oeMc us LAE E%&TBIO WESTERN NIEGICW PRE.MINING PLAN MAP 400 SCALE IN FEET 1 F ERG CENTURY ja rElowxr C i a ouiaeLv nsTres Ere :II 1 - 1 - - - PROPERTY OWNERS WITHIN 200 FEET SuP. 0' T&: WIrklElaNeE LTRDR,,aer6sO TS.'1r-iuew a• lonixra:1 i� TR ON 106711.10133 �` 1003-0]55 tiTs2 ; .vc m. fee, L.n9 r..R Vcm ], N i „,11 �Z'M19 noP>m® LLC Iixxfmm�R wa3Tt` •I m5 0.1116=1 caw...sm. olledmeeo sT1 .1E Arloolas 11O1..1O144., M.w •:WIN Co ILL [�m McaRotlns 05.5]1 oho.. ...A .N1e.w. r CO 10.1106 cCoomonon, pod ,.1 A- �� rc�vm. nu N ,0, .0105,1 l o Soon .,v;w wool MmOnry D000lAN HAM Uorrly R.. 5 P...., CO 006514909 VEGETATION: ALL AREAS WITHIN THE PERMIT BOUNDARY ARE CURRENTLY AGRICULTURAL CROP AND PASTURE LAND, GRAVEL ROADS, OR BUR➢INGS NOTE: CENTRAL COLORADO WATER CONSERVANCY DISTRICT IS THE SURFACE AND SUBSURFACE OWNER WITHIN THE PERMIT AREA PERMIT AREA = 140 B3 AC LEGEND: DUSTING CONTOURS EXISTING EASEMENT ROW SECTION UNE PROPERTY UNE DITCH UNITS PERMIT BOUNDARY EXISTING G. UNE EXISTING TELEPHONE COSTING WATERLINE EXISTING IRRIGATION DTTR,C f'RE9 'COTIC EXISTING ELECTRIC EXISTING OVERHEAD ELECTRIC DC.< SEARTArn SL'f,IR MGRAR WELL GAS WELL F. d 0• 2 A U EaS CU CU W i Central Colorado Water Conservancy District } • Sheer. 9 ings\Plan Sheets\Mining Plan \JT-Mining Plan drag, 2 -Mining Plan, 3/2 P \22009 Central Feasibility Studie �I LEGEND: 9 IIEC a TALL .AL' SLOPES LOPES DDSTING CONTOURS EXISTING EASEMENT ROW SECTION LINE PROPERTY UNE ACCESS ROAD DITCH UMT5 PERMIT BOUNDARY SLURRY WALL MINI NG LIMIT MINING HOSE LARS EXISTING GAS LINE EXISTING TELEPHONE EXISTING WATERLINE EXISTING IRRIGATION EXISTING FIBER OPTIC EXRTINC ELECTRIC d=5TIIC PhFNfN (CLTAC IXISTNC SANITARY SEWER MONITOR WELL GAS WELL TRAFFIC DIRECTION !LASE 1/1A CELL NOTE: PERMIT AREA = 142 03 AC NORTH CELL MINING AREA _ 3242 AC DIRECTION OF MINING ....Z.— — _ 7-- — — = • ar- 44' — ry c. .N -ID (BLOW 5067 A, STO KPILE AREA NORTH CELL: PHASE 1/1A MINING PLAN MAP SCALE IN FEET PRODUCT STOCKPILE AREA :5' =-I Inoch, LMT I. WALL CAP �x TOPSOIL / 11RAL'r+ROES- >-Hm wA;L1 I MAINE W'EAYA TYPICAL MINING SECTION BAS DEWATERING WK.= 53' TO 11 • 5 _A Sweet Valley Pit Li IL w m 3 w o G 19 T O O c o 47 to c c co V V y. For. o 2 3 ral Feasibility Studies\Draw ngs\Plan SheeIe 1 ning PIar JT-M ping Plan dwg. 3- LEGEND: 0630 EXISTING CONTOURS - - EXISTING EASEMENT ROW SECTION LINE PROPERTY UNE ACCESS ROAD DITCH LIMITS PERMIT BOUNDARY SLURRY WALL MINING LIMIT MINING PHASE UNITS EX6FING GAS UNE EXISTING TELEPHONE EXISTING WATERLINE EXISTING IRRIGATION EXISTING FIBER OPTIC EXISTING ELECTRIC DUSTING OVERHEAD ELECTRIC EXISTING SANITARY SEWER MOUTON WELL GAS WELL TRAFFIC DIRECTION NOTE: PERM] AREA = 147.83 AC SOUTH CELL MINING AREA = 6011 AC DEWATERING SOUTH CELL: PHASE 2/2A MINING PLAN MAP SCALE IN FEET TOPSOIL / o.Li1WJ4CV.� WIFE 4=01.1 O g t 5)' TO SS' EXHIBIT D Mining Plan Mining Limits Central Colorado Water Conservancy District (CCWCD) proposes to mine the land located in the Northeast % of Section 30, Township 4 North, Range 66 West of the 6th Principal Meridian, in Weld County, Colorado. The proposed mining site is located adjacent to WCR 42 on the north side, WCR 25.5 on the west side, and CO Hwy 60 on the east side. WCR 40 is approximately 2,630 feet to the south of the permit boundary. Access to the site will be located on the south side of the permit boundary and approximately 1,311 feet west of CO Hwy 60 and 1,285 feet east of WCR 25.5. The dominant land use surrounding the property is agricultural. The permit boundary will encompass approximately 147.83 acres which will all be affected acreage, and approximately 72.53 acres being mined. The remaining area will consist of access roads and disturbed land (processing areas, stockpiles, etc.). The following table depicts the different affected acreage: Affected Acreage Mining Plan Area (acres) Mined Area (North Cell) 32.42 Mined Area (South Cell) 40.11 Access Roads (North Cell) 2.11 Access Roads (South Cell) 2.43 Western Mutual Ditch 2.62 Existing Gravel Roads and Structures 6.22 Disturbed Land 61.92 TOTAL 147.83 Various setbacks from adjacent roads, adjacent structures, and oil and gas infrastructure will be maintained as mining occurs. All setbacks specified in the surface use agreements with the oil/gas companies will be followed. The final executed agreements are expected to be obtained in the near future and will be forwarded to the Division when they are available. A minimum 200 - foot setback from any existing oil/gas facility will be maintained until that time. See Exhibit C, Mining Plan Map, and the Slope Stability Report for the mining limit configuration and information on setbacks and their locations. The abandoned wells would be cutoff after mining has reached the bedrock surface or the reclaimed slope surface where a new cap and any additional concrete for the existing plug would be needed. Petroleum Development Corporation (PDC) is the leaseholder and operator of the existing abandoned wells. Discussions with PDC have indicated they would cut down the existing casings as mining occurs. We have also worked with McCarty Engineering, LLC to provide this service at other mining permit locations for other operators. If PDC does not want to perform this work then McCarty Engineering, LLC Lial J&T Consulting, Inc. Central Colorado Water Conservancy District Sweet Valley Pit DRMS 112 Permit Application would be contacted to do it. They are licensed and bonded to obtain approvals from the COGCC to do these types of re -plug services on abandoned oil and gas wells. Products Sand and gravel will be the primary product produced from the Sweet Valley Pit. The principal intended use for the sand and gravel is for road base and construction aggregates. Subsurface drilling and testing have verified that the Sweet Valley Pit property contains a significant commercial deposit of sand and gravel. The depth of interbedded sandy clays and overburden at the surface ranges from 0 to 7.5 feet. The thickness of the aggregate material ranges from 49 to 68 feet where bedrock contact occurs. Mining Methods The deposit will be dry mined during Phase 1a and 2a and after a slurry wall is constructed around the perimeter of the mining area for Phase 1 and Phase 2. Mining will not expose groundwater prior to the slurry wall being constructed for Phase la and Phase 2a. Design specifications for the slurry wall and quality control procedures used during construction will ensure that the reclaimed reservoir meets State Engineer's Office (SEO) performance standards. Dewatering trenches will be excavated around the perimeter of the mining area prior to mining operations commencing. The depth of the ditches will vary as the mining progresses deeper into the alluvium in order to maintain the groundwater level below the bottom of the active mining surface, and therefore minimize the exposed groundwater surface area. The dewatering ditches will flow to a collection pond, from which the water will be pumped where it will either be used for processing and dust control water or where it will be discharged to eventually reach the South Platte River. The equipment and facilities may include, but are not limited to the following: Scaling_Equipment A scale house and scale will be used to weigh trucks and product leaving the pit. The dimensions of the scale house are 40' x 12' and the scale will be 70' by 10'. The scale house will be founded on typical trailer type jacks and tiedowns on top of concrete pads with minimal rebar to provide reinforcement. The scale will also be founded on concrete pads with reinforcement where load cells are located for the scale. These foundations would be removed once the pit is fully mined. Processing Equipment Screens, wash plant, crusher, conveyors, stackers, and other miscellaneous processing equipment. All processing equipment will be mobile and temporary without fixed foundations. Washing will occur at the wash plant and excess water from the washing will be recycled to the wash water ponds within the processing area, there will be a sedimentation pond that will receive the excess water first and then and overflow from the sedimentation pond to the clear water pond for re -using the water and pumping back to the wash plant. Earth Movinq Equipment Dozers, loaders, scrapers, excavators, and compactors will be used for mining and earth moving operations. Haul Roads and Access Roads II -� J&T Consulting, Inc. ild Central Colorado Water Conservancy District Sweet Valley Pit DRMS 112 Permit Application Haul roads will be graded and constructed using the existing pit run where needed outside the processing area in order to move material from the mine using haul trucks, loaders, or scrapers. These roads will be mined and removed as the mining is completed. Access roads to the processing plant will be constructed with aggregates made at the site where the entrance to the permit boundary is located to the scale house and through the scaling area until the access reaches the stockpile locations. The roads around the stockpiles will be constructed from the existing pit run similar to the haul roads. Miscellaneous Equipment Dewatering pumps, electrical trailer, generator trailer, small portable generators and watering trucks will be used as needed. As mining progresses, topsoil and overburden will be stripped to expose the aggregate product below. Topsoil will be stripped and salvaged from areas where overburden material will be stockpiled. All soil and overburden material will be used on -site for reclamation; so long-term stockpiling of these materials is not anticipated. Overburden stockpiles will be located within the permit boundary. See the attached mining plan in Exhibit C for the stockpile locations. Mining of the aggregate will progress down to the underlying bedrock. Since reclamation will occur concurrently with mining, it is not anticipated that overburden material will be stockpiled long-term prior to use in production of road base. During mining, the face will have a 3H:1V slope to bedrock or the bottom of the future reclaimed reservoir and the reclamation slope will be the same 3H:1 V slope (i.e. the reclaimed slope will be completed as mining occurs). The processed aggregate material will be temporarily stockpiled near the portable processing plant. The operator may import materials from off -site locations and export materials to other sites. The applicant and/or operator recognize that per Rule 3.1.5(9) of the Construction Material Rules and Regulations that if imported materials are used as backfill there must be documentation that is notarized and provided to the Division stating materials are inert. The applicant/operator will provide documentation to the Division if off -site materials are going to be used at the time of reclamation. Recommendations for monitoring of slope stability, including, conducting a visual inspection of the excavated slopes on a weekly basis for the duration of mining, conducting a visual inspection after a major precipitation event that has saturated the ground using the same procedures, contacting qualified personnel to evaluate and recommend remediation work to stabilize the area in the event a visual inspection detects signs of potential slope failure, and if no visible signs of slope failure are detected during mining, reducing visual inspections to once every six months after mining completion, or after every major precipitation event. All local, State, and Federal rules and regulations will be followed for the storage and handling of any fuel for the facilities. Topsoil Handling Plan As stated previously the topsoil will be stripped to expose the aggregate product underlying the topsoil. The topsoil will be stripped using scrapers and stockpiled in the topsoil stockpile area as depicted in Exhibit C. Topsoil will be stripped and salvaged from areas where overburden material will be stockpiled. The volume of topsoil is approximately 170,000 cubic yards. The depth of the topsoil is approximately twelve inches over the majority of the mining area. The J&T Consulting, Inc. Central Colorado Water Conservancy District Sweet Valley Pit DRMS 112 Permit Application topsoil will be stripped and stockpiled prior to mining operations. The height of the topsoil stockpiles will be approximately 35 feet. Mine Phasing CCWCD anticipates mining and reclaiming the 32.42 -acre Phase 1 a and Phase 1 North cell and the 40.11 -acre Phase 2a and Phase 2 South cell for the Sweet Valley Pit progressing as shown on the Mining Plan Map. The overall time required to complete the mining and reclamation is estimated to be 11 years and 8 months based on an average rate of 650,000 tons per year. The initial production is expected to be 300,000 tons per year with the maximum production expected to be 1,000,000 tons per year. However, it is possible that due to demand fluctuations, mining could progress slower than anticipated and additional time may be required for mining and reclamation of the site. The mining will progress beginning with the Phase la cell at the outer edge where material will be moved toward the interior such that the mining slope can be established. The Phase 1 a cell mining slope will be established for the entire perimeter in 3 to 6 feet intervals then when groundwater is exposed after the slurry wall construction the same process will occur for Phase 1. Once the mining of the Phase 1 a and Phase 1 cell is completed, mining of the Phase 2a and Phase 2 cell will begin by mining the outer edge where material will be moved toward the interior such that the mining slope can be established. The Phase 2a cell mining slope will be established for the entire perimeter in 3 to 6 feet intervals then when groundwater is exposed after the slurry wall construction the same process will occur for Phase 2. Dewatering Dewatering trenches will be placed along the perimeter of each mining area. The dewatering trench around the perimeter of each cell being mined will be placed at the toe of the mining slope. As the cell is mined deeper the dewatering trench will be lowered and moved laterally along the mining slope toward the center of that cell. Slurry walls are anticipated to be installed around the perimeter of each cell prior to exposing groundwater and mining will continue to commence in those cells. It is expected that minimal dewatering will be required after the slurry walls are installed due to the slurry walls cutting off groundwater infiltration into the cells. CCWCD will have an approved substitute water supply plan and well permit prior to exposing groundwater. The substitute supply plan will be updated annually to account for water that is consumed due to exposing groundwater by the mining operation. Explosives Explosives will not be used during mining. Liiii J&T Consulting, Inc. Central Colorado Water Conservancy District Sweet Valley Pit DBMS 112 Permit Application EXHIBIT E Reclamation Plan Lined water storage reservoirs will be the final reclaimed use for the Sweet Valley Pit where it will become the Sweet Valley Reservoir Complex. Portions of mining area will be reclaimed as "native" areas, which will be re -seeded with native vegetation. The mining areas will be reclaimed as water storage reservoirs. The remaining area within the proposed permit boundary will consist of reservoir shoreline, unimproved access roads around the reservoirs, and reclaimed vegetated land. Final Land Use Reclamation Plan Area (acres) Reservoir Water Surface (North Cell) 32.23 Reservoir Water Surface (South Cell) 40.10 Access Roads (North Cell) 2.11 Access Roads (South Cell) 2.42 Reclaimed Vegetated Land (Disturbed Land and Slopes above Reservoir Water Surface) (North Cell) 7.80 Western Mutual Ditch 2.62 Existing Gravel Roads and Structures 6.22 Reclaimed Vegetated Land (Disturbed Land and Slopes above Reservoir Water Surface) (South Cell) 12.67 Reclaimed Vegetated Land (Disturbed Land for Processing Area and Stockpiles) 41.66 TOTAL 147.83 Water Storage Reservoir In general, the mining limits will be mined down to the claystone/sandstone bedrock. The relatively impermeable bedrock will make the bottom of the reservoir. The reservoir will be separated from the surrounding alluvial aquifer by the slurry wall liner system as detailed in the cross-section shown on the Reclamation Plan Map. The slurry wall liner will be keyed into the bedrock material and extend upward through the height of the alluvium to three feet above the reclaimed normal water surface elevation. Design specifications and quality control procedures used during the construction of the slurry wall liner will ensure that the reservoir meets the State Engineer's Office (SEO) performance standards for permeability. All reservoir slopes will be reclaimed to 3H:1V final grade. The cells will be mined at 3H:1V slopes. As the mining progresses, the final 3H:1V reclamation slopes will be shaped using a dozer. Final reclamation by capping with topsoil and re -vegetating above the expected reservoir water level will follow grading operations as well as backfilled areas that will not be haul/access roads to minimize the amount of disturbance at any one time. LIJ&T Consulting, Inc. Central Colorado Water Conservancy District Sweet Valley Pit DRMS 112 Permit Application Recommendations for monitoring of slope stability, including, conducting a visual inspection of the excavated slopes on a weekly basis for the duration of mining, conducting a visual inspection after a major precipitation event that has saturated the ground using the same procedures, contacting qualified personnel to evaluate and recommend remediation work to stabilize the area in the event a visual inspection detects signs of potential slope failure, and if no visible signs of slope failure are detected during mining, reducing visual inspections to once every six months after mining completion, or after every major precipitation event. During reclamation activities, inlet and outlet facilities for the reservoir will be designed and installed once the operational criteria of the proposed reservoir have been identified by an end user. Reclamation Measures/Materials Handling Backfilling will be done to provide stabilized shorelines around the reservoir and to minimize erosion. The backfill material will consist of gravel and topsoil. There will not be known toxic or hazardous materials in the backfill material. Additionally, it is not likely that acid forming or toxic materials will be encountered during mining. The mining will not leave high walls on the property. In addition, there will be no auger holes, excavations, or shafts left on the property. The auger holes for the gravel investigation were backfilled with native gravel and soil cuttings from the drilling. The auger holes that were not backfilled were the four monitor wells that were constructed and permitted as permanent monitoring wells to monitor groundwater at the north, east, west, and south sides of the permit boundary. Monitor wells will remain on the property so the end user may continue to monitor levels of the groundwater elevations. Topsoil will be placed to finalize the grading such that seeding can occur. The topsoil will be placed at all disturbed areas and on the mining slope to an elevation matching the expected reservoir water level. Topsoiling Approximately the top twelve inches of soil on the property is classified as topsoil. This layer includes the root zone of grasses and crops, which will be stripped and stockpiled separately. Topsoil will be re -handled as little as possible and a Technical Revision will be submitted prior to re -locating topsoil stockpiles. By using concurrent reclamation techniques, the topsoil is not expected to remain in stockpiles for more than one to five years. If the stockpile remains more than one growing season, it will be seeded with a fast-growing vegetative cover to prevent erosion. All topsoil will be retained on -site to reclaim the reservoir shoreline, and other areas disturbed by mining activities. Where required, topsoil will be replaced to a depth of twelve inches. Prior to placing topsoil uneven areas and low spots will be graded to subgrade elevation, in addition debris, roots, branches, stones, in excess of 2 inch in size will be removed. Scarify surface to depth of 8 inches where topsoil is to be placed for a roughened condition to assist in eliminating erosion. Scarify/cultivate in areas where equipment used for hauling and spreading topsoil has compacted subsoil. Place topsoil during dry weather and on dry unfrozen subgrade. Remove vegetable matter and foreign non -organic material from topsoil while spreading. Grade topsoil to eliminate rough, low or soft areas. Reveqetation As mining operations are completed, areas for reclamation will be graded and shaped for revegetation. Runoff or excess water from adjacent areas will not be allowed to flow over slopes LId&T Consulting, Inc. Central Colorado Water Conservancy District Sweet Valley Pit DRMS 112 Permit Application being graded and seeded. If needed, berms or channels will be constructed to divert excess water and convey it in a safe and non -erosive manner. For disturbed areas, the reclamation plan includes re -vegetating with appropriate seed mixes to minimize erosion and re-establish natural terrain. A proper seedbed is firm and free of competing vegetation. Correct firmness is when an adult footprint is only slightly visible on the prepared bed prior to the seeding operation. The seedbed can be firmed, if needed, by pulling a commercial or homemade packer or roller. A firm seedbed is essential for proper seeding depth prior to using the mechanical seeder or broadcasting seed. Apply seed evenly in two intersecting directions. Rake in lightly. Apply seed at the vendor's recommended bulk seed rate/acre according to the quantity of PLS contained in their bulk seed to achieve the specified PLS/acre rate utilizing a mechanical seeder. Where access is limited and seed is applied by hand broadcasting, apply the seed mix at twice the PLS rate per acre and rake in once broadcasting in completed. Do not seed areas in excess of that which can be mulched on same day. Do not sow immediately following rain, when ground is too dry, or when winds are over 10 mph. Immediately following seeding, apply mulch to thickness of 1/4 inch. The seed mixture below was selected as recommended by the DRMS for this climate zone (Dryland Quick Establishment, elevation less than 8,000 feet). Reservoir side slopes below the anticipated reservoir water level will not be seeded. The proposed seed mix is shown in the following table. Reclamation and Temporary Stockpile Seed Mix Seed Mix Species Scientific Name Application Rate* (#PLS/acre) Grasses Intermediate Wheatgrass Thinopyrum intermedium 2.50 Slender Wheatgrass Elymus trachycaulus, 2.00 Pubescent Wheatgrass Thinopyrum intermedium 3.00 Russian Wildrye Psathyrostachys juncea 3.00 Western Wheatgrass Pascoprum smithii 2.00 Sand Dropseed Sporobolus ctyptandrus 0.25 *Application rate is for drilling the seed. If seed is to be broadcast, the application rate will • be doubled. The seed mix for final reclamation as described above does not require fertilizer per the information provided by the DRMS. The seeded areas will be covered with dead crop litter from sorghum or milo crop forage, or with straw mulch at a rate of 2,000 pounds per acre. Ideal seeding dates for Colorado are November 1 to May 1, when the soil is not frozen. Grasses should be seeded when soil moisture and temperature are optimum for germination. Grasses are designated either "cool" or "warm" season based on their growth cycle. Cool -season grasses can be planted when temperatures are cooler and day lengths are short. Warm -season grasses need warmer temperatures and longer day lengths to grow. Refer to Weld County's seeding recommendations as a resource for time frames outside of the ideal seeding times at www.weld.gov/Government/Departments/Public-Works/Weed-Management/Controlling- Weeds/Reseeding. J&T Consulting, Inc. Central Colorado Water Conservancy District Sweet Valley Pit DRMS 112 Permit Application If a significant invasion of noxious weeds occurs after seeding, the weeds will be mowed before they can go to seed. The areas will be mowed periodically for additional control as needed. Mechanical control will be used as a first priority. Chemical methods will only be used if no other alternative produces acceptable results. See Exhibit J for specifics of the weed control plan. For temporary earthen stockpiles, the reclamation plan includes re -vegetating with appropriate seed mixes to minimize erosion and establish more rapidly to stabilize the stockpiles. If a temporary earthen stockpile remains more than one growing season, it will be seeded with the seed mix above to prevent erosion. Water — General Requirement To minimize the effect on the prevailing hydrologic balance, CCWCD will: a. Comply with all applicable Colorado water laws. b. Comply with all applicable Federal and State water quality laws and regulations. c. Comply with all Federal and State requirements for dredge and fill. d. Re -grade and backfill all sediment and siltation structures after mining is completed. e. Monitor groundwater levels adjacent to the site and mitigate any damage to adjacent wells that dewatering activities may have. (See Exhibit G) Groundwater — Specific Requirements The operation will not affect groundwater quality on or off the site. The operation will comply with State groundwater quality standards. The mining and reclamation may affect the groundwater table surrounding the mine site. The proposed mitigation efforts to minimize these impacts are ditches in necessary areas to maintain groundwater levels during the mining, and dewatering wells or a perimeter drain if needed to convey groundwater around the lined reservoir after the pit side liner is installed. A ground water model by McGrane Water Engineering, LLC has also been provided and the results indicate that water levels will be affected by +1 to +3.5 ft without mitigation measures and with mitigation measures there is not any mounding occurring that affects any wells by using dewatering wells to manage the mounding. On the shadow side (north) of the slurry wall there would be a drop of 3.5 feet adjacent to the wall, however there are other gravel mines for Monarch and Section 20 that have been approved and the wells within the predicted water level change are all within their mining areas so the overall impact of the slurry walls will be insignificant. CCWCD proposes that they monitor groundwater levels through monitoring wells that they have installed, or have access to before, during, and after the mining and reclamation is complete so that impacts to the groundwater table, from this mining operation, can be identified and addressed. It is the intent of CCWCD to operate responsibly and to mitigate any damage to wells that is directly attributable to the mining and reclamation of this site. J&T Consulting, Inc. Central Colorado Water Conservancy District Sweet Valley Pit DRMS 112 Permit Application Reclamation -- Approximate Time Table The initial proposed rate of production for the mine is 300,000 tons per year and the maximum proposed rate of production for the mine is 1,000,000 tons per year. The total time frame to mine all phases assuming an average production rate of 650,000 tons per year is approximately 11 years and 8 months. The following table shows the approximate time frame to finish each phase of mining assuming an average production rate of 650,000 tons per year: t Mining Cell Acreage Time Frame to Complete and Reclaim Phase Phase 1a (Includes Processing and Stockpile Areas) 83.56 1 Year for Mining 1 Year at End of Mining for Processing and Stockpile Area Reclamation Phase 1 Same as Phase 1a 3 Years, 7 Months Phase 2a 50.51 1 Year Phase 2 Same as Phase 2a 5 Years, 1 Month Totals 134.07 11 years, 8 months The assumed annual production rate is 300,000 tons initially to 1,000,000 tons maximum for processed material leaving the mine each year. The size and area of reclamation varies but generally consists of the outside mining slope being maintained as the 3H:1V reclaimed slope. For more information on sequencing and size of the reclamation activities refer to Exhibit L financial warranty calculations. d&T Consulting, Inc. Central Colorado Water Conservancy District Sweet Valley Pit DRMS 112 Permit Application EXHIBIT F Reclamation Plan Map See attached maps. LIJ&T Consulting, Inc. Central Colorado Water Conservancy District Sweet Valley Pit DRMS 112 Permit Application LEGEND: NORTH CELL: PHASE 1 RECLAMATION PLAN MAP SOYA COSTING CONTOURS PROPOSED CONTOURS COSTING EASEMENT ROM SECTION UNE PROPERTY UNE ALMS ROAD DITCH LIMITS PERMO BOUNDARY SLURRY WALL MINING LIME COSTING CAS UNE DUSTING TELEPHONE EXSTING WATERLINE EXISTING IRRIGATION EXISTING FIBER OPTIC EXISTING ELECTRIC OM** NWRTAPO SERER MOI*13* 'ES. W SW. T.4''4 GAS WELL PROPERTY/PERMIT BWNDARl� VARIES I rrxac LAIN P0043131 BERM •••_433.A. 0' TO 6' TOPSOIL / OYF%I6LAoG I HURTS MU. • OPAiII •DaffA - R]U • SS TEIIIL • 53' TO 59' ■ -I TYPICAL RECLAMATION SECTION SETS, Sweet Valley Pit E a U S D*U!: 1 EXISTING CONTOURS EXISTING EBSEIAENT ROW SECTION UNE PROPERTY UNE ACCESS ROAD O TTER UMITS PERMIT BOURG.' SLURRY WAIL MINING UNIT EXISTING GS UNE EXISTING TELEPHONE EXISTING WATERLINE EXISTING IRRIGATION EXISTING FIBER OPTIC EXISTING ELECTRIC ERUGMO SAMRIRY `TOES W IRER W61 t 4112 9(ANC GAS WELL SOUTH CELL: PHASE 2 RECLAMATION PLAN MAP SCALE IN FEET IARLIIM RRONEIr.= TOPSOIL / Oh3 W Tfl GRAVEL ALMOS RUNT �2D PmdiR BERM Cf TO GI ST TO Se' TYPICAL RECLAMATION SECTION N.TS foIf Sweet Valley Pit • 2 4 LEGEND: NORTH CELL: PHASE 1 SEEDING PLAN MAP 4630 EXISTING CONTOURS PROPOSED CONTOURS BUSTING EASEMENT ROW SECTION UNE PROPERTY UNE ACCESS ROAD DITCH LIMITS PERMIT BOUNDARY SLURRY WALL MINING LAIR CASTING GAS UNE EXISTING TELEPHONE COSTING WATEERUNE EXISTING IRRIGATION WNW COSTA OPTIC EG`IK SMRAWY SLTNA SEEDING AREA MOODY a CAS WELL NOTE: ALL DISTURBED AREAS OUTSIDE OF THE WATER SURFACE WILL BE SEEDED AND MULCHED. WITH THE EXCEPTION THE ACCESS ROAD, WHICH WILL BE GRAVEL SURFACED RECLAIMED AREA TABULATION: NORTH CELL WATER SURFACE AREA - 3223 AC NORTH CELL SCARIFY. TOPSOIL SEEDING AREA = 750 AC GRAVEL ACCESS ROAD = 211 AC TOTAL AREA = 41 90 AC 6-4 • �1,11 i'? ;1 r - I -_ - -w-:t1:,:-; ? SCALE IN FEET • -• 3r Sweet Valley Pit Central Colorado Water Concervancy District x s 3 4 EXISTING CONLON. PROPOSED CONTIURS EXISTING EASEMENT ROW SECTION UNE PROPERTY UNE ACCESS ROAD 01ICN UMRS PERM- BOUNDARY SLURRY WALL MINING UNIT EXISTING GAS UNE EXISTING TELEPHONE EXSTING WATOd1NE EXISTING IRRIGATION EXISTING REM OPTIC EXISTING ELECTRIC EXISTING SANRARY SEWER SEEDING AREA MONITOR WELL CAM WELL NOTE: ALL DISTURBED AREAS OUTSIDE OF THE WATER SURFACE WILL BE SEEDED AND MULCHED. WITH THE EXCEPTION THE ACCESS ROAD. WHICH WILL BE GRAVEL SURFACED RECLAIMED AREA TABULATION: SOUTH CELL WATER SURFACE AREA - 40 10 AC SOUTH CELL: SCARIFY. TOPSOIL SEEDING AREA = 5248 AC GRAVEL ACCESS ROAD = 2 43 AC TOTAL AREA - 95 01 AC SOUTH CELL: PHASE 2 SEEDING PLAN MAP Sweet Valley Pit U • 4 4 EXHIBIT G Water Information Introduction The Sweet Valley Pit mining site is I located in the Northeast 1/4 of Section 30, Township 4 North, Range 66 West of the 6th Principal Meridian, in Weld County, Colorado. The proposed mining site is located adjacent to WCR 42 on the north side, WCR 25.5 on the west side, and CO Hwy 60 on the east side. WCR 40 is approximately 2,630 feet to the south of the permit boundary. Access to the site will be located on the south side of the permit boundary and approximately 1,311 feet west of CO Hwy 60 and 1,285 feet east of WCR 25.5. The dominant land use surrounding the property is agricultural. The operation will consist of sand and gravel production and will not impact the South Platte River in the form of depletions due to a slurry wall that will be installed prior to mining below exposed groundwater. Mining of the Sweet Valley Pit site will last for approximately 11 years and 8 months. Once reclamation is complete, the water storage reservoirs will be called the Sweet Valley Reservoir Complex with a total of two reservoirs. The north reservoir will have a water surface area of 32.42 acres and the south reservoir will have a water surface area of 40.10 acres. The depth to groundwater ranges from 13 to 18 feet seasonally within the permit boundary (measured in Existing MW, and MW -1 through MW -3, See the attached piezometer measurements table). The site will be mined down to a depth of 49 to 68 feet thus exposing groundwater to the atmosphere. This exposed groundwater, along with the operational losses associated with the extraction of sand and gravel deposits, will impact the South Platte alluvial aquifer. These impacts will cause river depletions that must be augmented. Groundwater will be exposed during the mining once the mining depths reach an elevation of approximately 4749 feet on the south side of the property and an elevation of approximately 4739 feet on the north side. To enable dry mining at the Sweet Valley Pit mining site, there will be dewatering trenches around the bottom of the mining slope. These dewatering trenches will change in length throughout mining. The maximum length will occur when the north or south cell is completely mined, concurrently with reclamation since the mining slope is the same as the reclaimed slope. The maximum size of dewatering trench will be 0.75 acres of exposed surface area. The water will flow from the dewatering ditch to a small pond at the end of the dewatering ditch from which the water will be pumped where it will either be used for processing and dust control water or where it will be discharged to eventually reach the South Platte River. As mining progresses, the dewatering trenches will shift to account for additional groundwater being exposed. The gravel pit will have slurry wall liners for Phase 1 and Phase 2 constructed prior to exposing groundwater. Water Requirements Water use at the Sweet Valley Pit mining site will include evaporation from exposed groundwater, dust control of haul roads and stockpiles, water for the wash plant (i.e. wash screen for concrete rock and sand) and water retained in material removed from the site. LIJ&T Consulting, Inc. Central Colorado Water Conservancy District Sweet Valley Pit DRMS 112 Permit Application Evaporative Loss Evaporative losses are dependent on the exposed water surface area, which may shift throughout the mining operation, but will not exceed the maximum. Exposed surface area at the Sweet Valley Pit mining site will include groundwater exposed in the dewatering trenches. The maximum exposed surface area at the site during mining is estimated at 0.75 acres. CCWCD plans to keep the site dewatered throughout the life of the mine. Evaporation data was taken from NOAA Technical Report NWS 33, Evaporation Atlas for the 48 Contiguous United States. The annual gross evaporation was determined to be 45 inches for this location. Monthly evaporation percentages are established by guidelines set by the State Engineer's Office. To determine precipitation, data from the National Weather Service for Greeley, CO (UNC) (1967-2023) was used. The long-term average precipitation at the Sweet Valley Pit mining site is estimated at 14.26 inches. Effective precipitation is calculated as 70% of the total precipitation. The net evaporation is the difference between gross annual evaporation and effective precipitation. The resulting net evaporation is 35.02 inches or 2.92 feet. The maximum annual evaporative loss from the 0.75 acres is 2.19 ac -ft. Operational Loss The average annual production from the Sweet Valley Pit mining site is estimated at 650,000 tons. Using 4% moisture content (2% for moisture in the product and 2% for water used to wash), the total associated consumptive use for water retained in the material mined and water used for washing the total associated consumptive use for water retained in the material mined is 19.1 ac -ft. Dust control use is 10,000 gal/day, 6 days/week, 4 weeks/month for 10 months of the year. This equates to 7.4 ac -ft. Maximum annual operational loss is estimated to be 26.5 ac -ft. Consumptive Use The maximum annual consumptive use (operational loss + evaporation loss) at this site during the mining operation is estimated to be 28.69 ac -ft. Replacement Water The replacement of consumptive uses at the site will be accounted for in a substitute water supply plan (SWSP) approved by the State Engineer. The SWSP will be obtained prior to any mining activities occurring that expose groundwater. Surrounding Water Rights The attached Figure A-1 Well Permits in the Sweet Valley Pit — Groundwater Evaluation by McGrane Engineering, LLC shows the permitted wells within 600 feet of the mining limits and permitted wells within the boundaries of the groundwater model/evaluation. The well information IiiIiil J&T Consulting, Inc. Central Colorado Water Conservancy District Sweet Valley Pit DRMS 112 Permit Application and locations were obtained from the Division of Water Resources online mapping well permit locator. This well and water rights information was cross checked with the State's CDSS. Between the sources, all permitted and decreed wells are included. Table G-1 below is a corresponding list of wells as numbered in the Sweet Valley Pit — Groundwater Evaluation by McGrane Engineering, LLC that is attached that are within 600 feet of the mining limits and that were within the 1 to 3.5 feet mounding area on the north and south side of the pit. Table G-1 - Permitted and Decreed Wells Within 600 Feet of Mining Limits Area of 1- 3.5 feet mounding and shadowing not owned by CCWCD Map ID Permit No Structure ID Well Name Owner Address City State Zip Code 1 2 187426-A Domestic Well Gerald J. and Teresa Moran Castor Hansen 19801 CR 25.5 Platteville CO 80651 54-WCB Domestic Well Platteville CO 80651 3 58-WCB Domestic Well Krosh & Hansen Platteville CO 80651 4 19924-U WDID 0205532 Breckon Well 4 H&S Land & Cattle, LLC (formerly Linda Kay Eppinger) P.O. Box 366 Gilcrest CO 80623 5 19924-W WDID 0205534 Breckon Well 6 H&S Land & Cattle, LLC (formerly Linda Kay Eppinger) P.O. Box 366 Gilcrest CO 80623 6 19924 -T -R WDID 0205531 Breckon Well 3 H&S Land & Cattle, LLC (formerly Linda Kay Eppinger) P.O. Box 366 Gilcrest CO 80623 7 8 19924 -V -R 19924 -R -R WDID 0205533 WDID 0206021 Breckon Well 5 H&S Land & Cattle, LLC (formerly Linda Kay Eppinger) P.O. Box 366 Gilcrest CO 80623 Eaton Cattle Well 7 H&S Land & Cattle, LLC (formerly Eaton Cattle) P.O. Box 366 Gilcrest CO 80623 9 11113-R WDID 0206462 Gutfelder Well 11113 H&S Land & Cattle, LLC P.O. Box 366 Gilcrest CO 80623 10 11114-R WDID 0206463 Gutfelder Well 11114 H&S Land & Cattle, LLC P.O. Box 366 Gilcrest CO 80623 11 7165-R WDID 0205355 Benson Well 2 H&S Land & Cattle, LLC P.O. Box 366 Gilcrest CO 80623 I-I J&T Consulting, Inc. Central Colorado Water Conservancy District Sweet Valley Pit DRMS 112 Permit Application 12 23014 Domestic Well Howard Breckon 538 Garfield Denver CO 80202 80011 13 14028-R WDID 0206862 Koehn Well #3 United Water & Sanitation District 3855 Lewiston Street #140 Aurora CO At the time of SWSP application/approval, a new gravel pit well permit will be applied for/obtained to include the evaporative and operational losses from the property. If the proposed use of groundwater at the Sweet Valley Pit mining site results in material injury to surrounding wells, CCWCD will ensure that all necessary measures are taken to address the issues. Water Quality An NPDES permit will be obtained from the Water Quality Control Division at the Colorado Department of Public Health & Environment for the Sweet Valley Pit mining site prior to discharging any groundwater that is dewatered from the site. This permit will be kept current and amended as necessary to ensure that any water discharged from the site will meet the permitted water quality standards. Impacts to Groundwater/Hydrologic Balance CCWCD will monitor the groundwater levels surrounding the site and provide groundwater mitigation via a groundwater drain or dewatering wells as described in the Groundwater Evaluation. The mitigation measures are provided with the Groundwater Evaluation. Design plans will be provided to the DRMS for the mitigation measures. CCWCD will discharge dewatering flows into existing adjacent irrigation laterals where possible to limit the disturbance to the surrounding land or discharge the dewatering flows via CCWCD's proposed pipeline that discharges directly to the South Platte River. A slurry wall liner is proposed around the Phase 1 and Phase 2 cells. To summarize the mitigation process, as the mining/dewatering occurs, CCWCD will monitor the groundwater levels adjacent to mine as the mining progresses. If groundwater levels drop to a level that prevents an adjacent well from performing acceptably, according to that well's owner, CCWCD will either implement a groundwater recharge ditch/pond near the well in order to raise the groundwater level in the vicinity of the well and hence return it's operation to acceptable standards, or will negotiate an agreement with that well owner to replace the well or provide replacement water via other means until the mining and reclamation activities are concluded but it is not anticipated that any groundwater levels will drop since the slurry wall will be installed prior to exposing groundwater and that mitigation measures to keep groundwater from mounding on the south side of the Phase 2 slurry wall will be in place such that baseline groundwater levels will be maintained to within plus or minus 2 feet. The north side of the Phase 1 slurry wall will be in a shadow area but all of the impacted wells are within the foot print of the approved permit boundaries of the Monarch Mine and the Section 20 Mine. Groundwater wells that are not owned by CCWCD are potentially located within 600 feet of the mining limits. The exact physical location of these wells will be determined during the SWSP and well permit application processes. If wells are found to be within 600 feet of the mining limits, CCWCD will either obtain a well waiver from the owner of the well, or provide an agreement with the well owner that CCWCD will mitigate and material damage to the well that is directly attributable to the mining and reclamation of the site. -liga J&T Consulting, Inc. Central Colorado Water Conservancy District Sweet Valley Pit DRMS 112 Permit Application All other wells within 600 feet of the mining limits are either owned by CCWCD or are monitoring wells therefore groundwater impacts to these wells do not need to be addressed. See the attached Piezometer Location Map, and Piezometer Data Summary, which show the locations of monitoring wells around the perimeter of the site that CCWCD has either installed or has access to, and the groundwater level data that has been collected for each well. The groundwater monitoring data will be provided for what has been done to date with this permit application and then submitted in the annual report for the pit to the DRMS after approval of the permit application. Groundwater Quality Monitoring Plan The majority of the mining operations at this site will be within the slurry wall lined area. The areas outside of the slurry wall will be limited to the scale house and haul roads for trucks coming into and out of the pit, and stockpiles, which are not likely to affect groundwater quality. To establish pre -mining groundwater quality at the site CCWCD will have two monitor wells sampled quarterly. The upgradient monitor well that will be sampled is MW -3 and the downgradient monitor well that will be sampled is MW -1. The samples will be taken by a qualified consultant and then tested by SGS Laboratories for the analytes listed in Tables 1-4 of the "Basic Standards for Groundwater." The quarterly sampling will continue until 5 quarters of data has been established. Once the baseline has been established, we would recommend annual sampling to monitor the groundwater quality. The groundwater quality sampling data will be provided for what has been done to date with this permit application/adequacy review and then submitted in the annual report for the pit to the DRMS after approval of the permit application. CCWCD will notify the DRMS within 7 days of receiving a lab report that indicates any of the standards set forth in Tables 1-4 have been exceeded. If a lab report shows an exceedance, a new sample will be taken to verify exceedance or discount potential lab contamination. ll MI kid II J&T Consulting, Inc. Central Colorado Water Conservancy District Sweet Valley Pit DRMS 112 Permit Application Sweet Valley Pit - Monitor Well Readings Well Designation Existing Monitor Well JT MW -1 JT MW -2 I JT MW -3 Description Southwest Corner Northwest Corner Northeast Corner Southeast Corner Top of Well Elevation (ft) 4765.11 4754.77 4757.78 4763.64 Ground Elevation (ft) 4762.38 4752.57 4755.56 4761.50 Date Depth to Groundwater from Top of Well (ft) Depth to Groundwater from Ground (ft) Elevation of Groundwater (ft) Depth to Groundwater from Top of Well (ft) Depth to Groundwater from Ground (ft) Elevation of Groundwater (ft) Depth to Groundwater from Top of Well (ft) Depth to Groundwater from Ground (ft) Elevation of Groundwater (ft) Depth to Groundwater from Top of Well (ft) Depth to Groundwater from Ground (ft) Elevation of Groundwater (ft) October 26, 2023 16.17 13.44 4748.94 November 17, 2023 17.25 14.52 4747.86 17.00 14.80 4737.77 17.96 15.74 4739.82 16.00 13.86 4747.64 December 22, 2023 18.63 15.90 4746.49 18.10 15.90 4736.67 18.83 16.61 4738.95 17.25 15.11 4746.39 January 20, 2024 19.54 16.81 4745.57 18.92 16.72 4735.85 20.00 17.78 4737.78 18.25 16.11 4745.39 February 25. 2024 20.31 17.58 4744.80 19.58 17.38 4735.19 19.92 17.70 4737.86 18.88 16.73 4744.77 March 30, 2024 20.60 17.87 4744.51 19.88 17.67 4734.90 20.77 18.55 4737.01 19.17 17.03 4744.47 Western Ditch Running Western Ditch Running SGS SGS Engage — Analysis Crosstab Job:DA60116 Matrix Ground Water Analysis: General Chemistry - SW846 9056A Regulation 41 Table Value Standard Description: P Analyte: pH - from field sample information pH Client Name J&T Consulting (Fort Lupton, CO) Client SarnpteID SWEET VALLEY PIT MW -1 Lab Sample ID DA60116-1 Unit: Sarriple.Date: 11/17/2023 3:00 PM 7.6 6.5-8.5 J&T Consulting (Fort Lupton. CO) SWEET VALLEY PIT MW -1 DA60116-1 F Groundwater Filtered 11/17/2023 3:00 PM J&T Consulting (Fort Lupton, CO) SWEET VALLEY PIT MW -3 DA60116-2 Ground Water 11/17/2023 3:20 PM 7.2 6.5-8.5 J&T Consulting (Fort Lupton, CO) SWEET VALLEY PIT MW -3 DA60116-2F Groundwater Filtered 11/17/2023 3:20 PM J&T Consulting (Fort Lupton, CO) SWEET VALLEY PIT (MW -1) DA62542-5 Ground Water 3/1/2024 12:55 PM 7.13 6.5-8.5 J&T Consulting (Fort Lupton, CO) SWEET VALLEY PIT (MW -1) DA62542-5F Groundwater Filtered 3/1/2024 12:55 PM J&T Consulting (Fort Lupton. CO) SWEET VALLEY PIT (MW -1) DA62542-5FC Groundwater Filtered 3/1/2024 12:55 PM J&T Consulting (Fort Lupton. CO) SWEET VALLEY PIT (MW -3) DA62542-6 Ground Water 3/1/2024 1:10 PM 7.11 6.5-8.5 J&T Consulting (Fort Lupton, CO) SWEET VALLEY PIT (MW -3) DA62542-6F Groundwater Filtered 3/1/2024 1:10 PM J&T Consulting (Fort Lupton, CO) SWEET VALLEY PIT (MW -3) DA62542-6FC Groundwater Filtered 3/1/2024 1:10 PM a b Result Comments Calculated as: (Nitrogen, Nitrate) + (Nitrogen. Nitrite) Elevated detectron limit due to matrix interference. General Chemistry - SW846 9056A Regulation 41 Table Value Standard General Chemistry - SW846 9056A Regulation 41 Table Value Standard General Chemistry - SW846 9056A Regulation 41 Table Value Standard TDS TDS (mg/L, unless other units Chloride Chloride (mg/L, unless other units Fluoride Flouride (mg/L, unless other units mg/I given) mg/I given) mg11 given) Not Tested 400 148 250 0.77 2 Not Tested 400 161 250 0.94 2 709 400 151 250 1.2 2 723 400 165 250 0.86 2 f General Chemistry - SW846 9056A Regulation 41 Table Value Standard General Chemistry - SW846 9056A Regulation 41 Table Value Standard General Chemistry - SW846 9056A Nitrogen, Nitrate Nitrogen, Nitrate Nitrogen, Nitrate + Nitrite Nitrate + Nitrite as Nitrogen Nitrogen, Nitrite mgil 3.7' [mgIL, unless other unitsgisen) 10 mg/I 3.7 (rng/L, unless other uniisgiven) 10 mg/I 0.048 5.4' 10 5.4 10 <0.0080 3.4 10 3.4 10 <0.040 4 10 4 10 <0.040 Regulation 41 Table Value Standard General Chemistry - SM 2540D-2011 General Chemistry - SW846 9056A Regulation 41 Table Value Standard Metals Analysis - SW846 6010C Nitrogen, Nitrite (mg/L, unless other units Solids, Total Suspended Sulfate Sulfate Dissolved (mg/L, unless other units Aluminum given) mgll mg/I given) ug/l (1.000 ug/I = 1 mgIL1 1 431 187 250 <100 1 36 207 250 <100 1 Not Taken 188 250 <100 1 Not Taken 193 250 <100 Regulation 41 Table Value Standard Metals Analysis - SW846 6010C Regulation 41 Table Value Standard Metals Analysis - SW846 6010C Regulation 41 Table Value Standard Metals Analysis - SW846 6010C Aluminum Dissolved Antimony Antimony Dissolved Arsenic Arsenic Dissolved Barium (mgIL, unless other units given) ugh (1,000 ugh = 1 mg/L) (mglt, unless other units given) ugh (1.000 ugh= 1 mgtL) (mglL, unless other units given) ugh (1.00O ugh = 1 mgtL) 5 <30 0.006 <25 0.01 67.5 5 <30 0.006 <25 0.01 60.1 5 <30 0.006 <25 0.01 62 5 <30 0.006 <25 0.01 51.3 Regulation 41 Table Value Standard Metals Analysis - SW846 6010C Regulation 41 Table Value Standard Metals Analysis - SW846 6010C Regulation 41 Table Value Standard Metals Analysis - SW846 6010C Barium Dissolved Beryllium Beryllium Dissolved Boron Boron Dissolved Cadmium (mg/L, unless other units given) ugh (1,000 ugh = 1 mg/L) (mg/L, unless other units given) ugh (1,000 ugh = 1 mg/L) (mg/L, unless other units given) ug/ (1,000 u911= 1 mg/L) 2 <10 0.004 134 0.75 <10 2 <10 0.004 <50 0.75 <10 2 <10 0.004 209 0.75 <10 2 <10 0.004 191 0.75 <10 Regulation 41 Table Value Standard Metals Analysis - SW846 6010C Regulation 41 Table Value Standard Metals Analysis - SW846 6010C Regulation 41 Table Value Standard Metals Analysis - SW846 6010C Cadmium Dissolved Chromium Chromium Dissolved Cobalt Cobalt Dissolved Copper (mg/L. unless other units given) ugh (1,000 ugh = 1 mg/L) (mg/L, unless other units given) ug/i (1,000 ugh = 1 mgh_) (mg/L, unless other umis given) ugh (1,000 ugh= 1 mg/L) 0.005 <10 0.1 <5.0 0.05 <10 0.005 <10 0.1 <5.0 0.05 <10 0.005 <10 0.1 <5.0 0.05 <10 0.005 <10 0.1 <5.0 0.05 <10 Regulation 41 Table Value Standard Metals Analysis - SW846 6010C Regulation 41 Table Value Standard Metals Analysis - SW846 6010C Regulation 41 Table Value Standard Metals Analysis - SW846 6010C Copper Dissolved Iron Iron Dissolved Lead Lead Dissolved Lithium (mglL, unless other units given) ugll [1,000 uel = 1 mg(L) (mgfL, unless other units given) ugil it 000 ug!! = 1 nit-) {mg1L, unless other units given) ugf [1.000 ugh = 1 mg%L) 0.2 <70 0.3 <50 0.05 15.6 0.2 <70 0.3 <50 0.05 22.4 0.2 <70 0.3 <50 0.05 22.4 0.2 <70 0.3 <50 0.05 15.1 Regulation 41 Table Value Standard Metals Analysis - SW846 6010C Regulation 41 Table Value Standard Metals Analysis - SW846 7470A Regulation 41 Table Value Standard Metals Analysis - SW846 6010C Lithium Dissolved Manganese Manganese Dissolved Mercury Mercury Dissolved Molybdenum (mgIL, unless other units given) ugh (1,000 ugh = 1 rng/L) (mg&L, unless other units gweny ugh (1,000 uglf = 1 mg/L), (mg(L. unless other units given) ugh (1,000 ugh = 1 mg/L) 2.5 291 0.05 <0.10 0.002 <10 2.5 33.8 0.05 <0.10 0.002 <10 <5.0 0.05 <0.10 0.002 <10 2.5 <5.0 0.05 <0.10 0.002 <10 2.5 Regulation 41 Table Value Standard Metals Analysis - SW846 6010C Regulation 41 Table Value Standard Metals Analysis - SW846 6010C Regulation 41 Table Value Standard Metals Analysis - SW846 6010C Molvbedenum Dissolved Nickel Nickel Dissolved Selenium Selenium Dissolved Silver (Mg/L, unless other units given) ugA (1,000 ugll = 1 mg/L) (mg/L, unless other units given) ugh (1,000 ugll = 1 mg/L) (mg/L, unless other units given) eon (1,000 ugh = 1 mg1L) 0.21 <30 0.1 <50 0.02 <30 0.21 <30 0.1 <50 0.02 <30 0.21 <30 0.1 <50 0.02 <30 0.21 <30 0.1 <50 0.02 <30 Regulation 41 Table Value Standard Metals Analysis - SW846 6010C Regulation 41 Table Value Standard Metals Analysis - SW846 6010C Regulation 41 Table Value Standard Metals Analysis - SW846 6010C Silver Dissolved Thallium Thallium Dissolved Uranium Uranium Dissolved Vandium (mg/L, unless other units given) ug/l (1,000 ug/l = 1 mg/L) (mg/L, unless other units given) uo/I (1.000 ug/l = 1 mg/L) (mg/L, unless other units given) ugh 0.05 <10 0.002 <50 0.03 <10 b 0.05 <10 0.002 <50 0.03 <10 0.05 <10 0.002 <50 0.03 <10 0.05 <10 0.002 <50 0.03 <10 Regulation 41 Table Value Standard Metals Analysis - SW846 6010C Regulation 41 Table Value Standard Vandium Dissolved Zinc Zinc Dissolved (mgrL. unless other units given) ugll Ong/1_, unless other units given) 0.1 <30 2 0.1 63.3 2 0.1 <30 2 0.1 <30 2 McGrane Water Engineering, LLC 1669 Apple Valley Rd. Y Lyons, CO 80540 o Phone: (303) 917-1247 E -Mail: dennis@mcgranewater.com McGrane Water Engineering SWEET VALLEY RESERVOIR COMPLEX - GROUNDWATER IMPACT EVALUATION PREPARED FOR J&T CONSTULTING FORT LUPTON, COLORADO JANUARY, 2024 PROJECT No.: J&T(SVRC) SVRC Pit Evaluation MCGRANE WATER ENGINEERING, INC. PROVIDES ACCURATE, COST-EFFECTIVE GROUNDWATER SOLUTIONS TO MUNICIPAL, INDUSTRIAL, MINING, AND RECREATIONAL WATER PROVIDERS USING EXPERIENCED PROFESSIONALS AND APPROPRIATE TECHNOLOGIES. SWEET VALLEY RESERVOIR COMPLEX W GROUNDWATER IMPACT EVALUATION PREPARED FOR J&T CONSULTING FORT LUPTON, COLORADO JANUARY, 2024 PROJECT No.: J8cT(SVRC) The technical material in this report was prepared by or under the supervision and direction of the undersigned, whose seals as a Professional Geologist and Professional Engineer in the State of Colorado are affixed below: The following independent consultants contributed to this report: Principal in Charge and Modeler: Dennis R. McGrane, P.E., C.P.G GIS Analyst: McGrane Water Engineering, LLC. Tammi Renninger, ElephantFish, LLC Page i SVRC Pit Evaluation Table of Contents BACKGROUND AND PURPOSE Water Level History Other Planned Pits Report Structure 1 1 1 1 EXECUTIVE SUMMARY 2 Model Results Summary 3 SVRC Mitigation Options 3 Impacts by Other Pits 3 Mitigation Runs 4 Pit Scenario 2 - Only Section 20 Pits 4 Pit Scenario 3 - Only Monarch Pits 5 Pit Scenario 4 - Section 20 and Monarch Pits 5 Pit Scenario 5 - All Pits (Section 20, Monarch and SVRC 5 CONCLUSIONS AND RECOMMENDATIONS 5 EXECUTIVE SUMMARY TABLES (within text) Table 1 - Pit Scenario 1 Impacts - Only SVRC (no Mitigation) 3 Table 2 - Pit Scenario 1 Impacts - Only SVRC (with flow to Pipeline) 3 Table 3 - Pit Run Impact Summary 5 REPORT SUMMARY FIGURES 7 Figure 1 - Study Area and SEO Wells 8 APPENDIX A - GROUNDWATER EVALUATION AND MODELING 9 Available Data 9 HYDROGEOLOGY 9 Surficial Geology 10 Well Depth 10 Bedrock Elevation 10 Water Levels 10 Depth to Water 11 Seasonal Fluctuations 11 Saturated Thickness 12 Well Yield 12 Aquifer Transmissivity 12 Hydraulic Conductivity (K) 12 MODELING 12 Boundary Conditions 13 Modflow "River" Package 13 Model Calibration - Pre -pit Run 14 Hydraulic Conductivity (K) Distribution 15 Mass Balance 15 Water Level Changes Caused by the SVRC 15 SVRC Mitigation Options 16 Model Error and Uncertainty 17 SOURCES 17 McGrane Water Engineering, LLC. Page ii SVRC Pit Evaluation Table of Contents — Continued APPENDIX A TABLES APPENDIX A FIGURES 19 Table Al - SEO Well Data Used for Hydrologic Analysis (4 pages) 20-23 Table A2 - SVRC Monitoring Well Water Levels 24 Table A3 - Section 20 Monitoring Well Water Levels (From J&T Consulting) 24 Table A4 - Modflow "River" Cell Parameters 14 Table A5 - Pre -pit Run Calibration Satistics 14 Table A6 - Pre -Pit Run Mass Balanct 15 Table A7 - Pit Scenario 1 Impacts - Only SVRC without Mitigation 16 Table A8 - Pit Scenario 1 Impacts - Only SVRC (with Flow to Pipeline) 16 25 Figure Ala - Study Area with DWR Wells (NE) 26 Figure Alb - Study Area with DWR Wells (SE) 27 Figure Ale - Study Area with DWR Wells (SW) 28 Figure Ald - Study Area with DWR Wells (NW) 29 Figure A2 - Surtiicial Geology and Well Depth 30 Figure A3 - Bedrock Elevation Contours 31 Figure A4a- Year 2000 Water Table 32 Figure A4b- Recent Water Table 33 Figure A5a- Depth to Water (NE) 34 Figure A5b- Depth to Water (SE) 35 Figure A5c- Depth to Water (SW) 36 Figure A5d- Depth to Water (NW) 37 Figure A6 - Aquifer Saturated Thickness 38 Figure A7 - Well Yield 39 Figure A8 - Transmissivity 40 Figure A9 - Hydraulic Conductivity 41 Figure A10 - PrePit Water Table and Calibration Residuals 42 Figure All - Scenario 1 - Change Caused by SVRC Pits 43 Figure Al2 - Scenario 1 - SVRC Mitigation to CCWCD 44 Pipeline Figure A13 - Scenario 1 - SVRC Mitigation to Drain 45 APPENDIX B - GROUNDWATER EVALUATION AND MODELING 45 BACKGROUND 46 MITIGATION RUNS 46 Pit Scenario 2 - Only Section 20 Pits 46 Pit Scenario 3 - Only Monarch Pits 47 Pit Scenario 4 - Section 20 and Monarch Pits 47 Pit Scenario 5 - All Pits (Section 20, Monarch and SVRC) 47 APPENDIX B TABLES APPENDIX B FIGURES Table B-1 - Pit Run Results Summar 48 49 Figure Bl - Scenario 2 - Change Caused by Section 20 Pits 50 Figure B2- Scenario 2 - Section 20 Mitigation to Drain 51 Figure B3 - Scenario 3 - Change Caused by Monarch Pits 52 Figure B4 - Scenario 3 - Monarch Mitigation to Drains 53 Figure B5 - Scenario 4 - Change Caused by Section 20 and Monarch Pits 54 Figure B6 - Scenario 4 - Section 20 and Monarch Pits Mitigation to Drains 55 Figure B7 - Scenario 5 - Change Caused by All Pits (Section 20 and Monarch and SVRC) 56 Figure B8 - Scenario 5 - All Pits with Mitigation to Drains 57 Figure B9 - Scenario 5 - All Pits with Mitigation to Drains (SVRC to Pipeline) 58 McGrane Water Engineering, LLC. Page iii SVRC Groundwater Evaluation January 2024 Page 1 of 58 BACKGROUND AND PURPOSE The proposed Sweet Valley Reservoir Complex (SVRC) is located approximately 2 miles west of Gilcrest, Colorado in Section 30, Township 4 North, Range 66 West (6th PM). The site is located approximately one mile east of the South Platte River (SPR) which flows northeast along this stretch. The SVRC consists of two proposed lined pits, each approximately 40 acres. The mine owner/applicant is the Central Colorado Water Conservancy District (CCWCD). As part of the mine permit application process, the mine consultant, J&T Consulting, Inc. (J&T) requested that McGrane Water Engineers, LLC. (MWE) determine the potential impacts of installing pit liners at the SVRC. Impacts typically include a rise in the water table ("mounding") on the up -gradient side of the slurry wall and a decline in the water table ("shadowing") on the down gradient side. Water level increases to within 10 feet of the surface on the up -gradient side of the pit could also cause flooding of low-lying structures such as home basements. A decline in water levels on the down gradient side could reduce the aquifer saturated thickness and well yields if the decline is more than approximately 10 percent of the saturated aquifer thickness. Water Level History The Colorado Geological Survey (CGS) has documented a rise in alluvial aquifer groundwater levels in the vicinity of Gilcrest, Colorado over the past several decades (Topper and Others, 2014). The higher than normal water table is a concern among residence and regulators due to potential flooding of basements and water logging damage to agriculture. We created a "recent Pre -pit" water table based on CGS contours that represent 2012 conditions and modified them to consider more recent 2021 and 2023 water levels from SVRC and other pit monitoring wells. We conclude that although water levels in the pit vicinity have likely increased approximately 10 feet over past decades, they are still 10-15 feet below ground level at and upgradient from the pits. Other Planned Pits Other gravel mining operations ("Monarch" Pit and "Section 20" Pit) are planned and applications have submitted to DRMS. Applicants for both pits have proposed installing infiltration drains to mitigate mounding on the upgradient sides, and recharge ponds, trenches or subsurface "exfiltration" drains (to eliminate evaporation) downgradient to mitigate shadowing. Upgradient drains are also planned for the SVRC as discussed below. The study area surrounding the pits covers approximately 24 square miles and includes approximately 404 permitted and constructed wells (excluding abandoned wells and monitoring wells) per the State's well database (CDWR, 2023). Figure 1 shows the permitted wells (sorted by use), proposed pit boundaries (white), study area and natural features provided by Google Earth. Due to the increased density of wells closer to Gilcrest, we did not consider wells shown in yellow in our hydrology data set, but we did consider them in our water level impact (aka "change") analysis. Report Structure This report includes an: 1. Executive Summary of the study, modeling results and recommendations; 2. Appendix A that provides the hydrogeologic evaluation and description of the model conceptualization, construction and the SVRC impact and mitigation analyses; McGrane Water Engineering, LLC 1669 Apple Valley Rd. • Lyons, CO 80540 • Phone: (303) 917-1247; email: dermis@mcgranewater.com SVRC Groundwater Evaluation January 2024 Page 2 of 58 3. Appendix B that evaluates impacts and mitigation measures of the other pits with and without the SVRC. All figures are located after each section. Some important unnumbered figures are located within the text to facilitate reading. Small numbered tables are located within the text with larger tables after each section. Figures and tables with prefixes "A" and "B" are located after the associated Appendix. EXECUTIVE SUMMARY We: 1. Reviewed published technical groundwater literature focusing on the hydrogeology of the South Platte River (SPR) near Gilcrest; 2. Compiled well data from the State's Well database (Table Al); 3. Updated maps prepared by the US Geological survey depicting the water table and alluvial aquifer bottom surfaces (aka bedrock structural elevation map) using more recent monitoring well drilling data; 4. Compiled monitoring well water level from monitoring wells drilled around the SVRC and Section 20 Pit by the applicants (Table A2). 5. Updated the table map (Figure A4a) created by the CGS (Topper et al., 2014), by considering more recent measurements around the pits (Figure A4b); 6. Evaluated the hydrogeology of the study area and created a Modflow groundwater model (Appendix A) that we used to create the "Pre -pit" water table; 7. Evaluated seasonal water level changes at the site; 8. Updated depth to water maps prepared by the CGS (Topper et al., 2014) within the study area (Figures A5a, b, c, and d); 9. Evaluated changes in groundwater levels compared to the "Pre -pit" water table caused by the SVRC liner (Pit Scenario 1); 10. Evaluated changes in groundwater levels from other pit scenarios (Appendix B) including: Pit Scenario 2 - Section 20 pits; Pit Scenario 3 - Monarch Pits; Pit Scenario 4 - Both Section 20 and Monarch Pits; and Pit Scenario 5 - All Pits (Section 20, Monarch and SVRC). 11. Each Pit Scenario includes at least one mitigation run that reduces mounding and shadowing using dewatering wells and infiltration and exfiltration drains discussed below. Model Results Summary The groundwater model was constructed using reasonable aquifer properties and boundary conditions (aquifer sides, bottom, thickness and river leakage assumptions). The Pre -pit Run was calibrated to recent water levels such that Root Mean Square (RMS) error is less than 3 ft (Figure A10). The modeled elevation contours are very similar to our Pre -pit water table (Figure A4b). Pit Scenario 1 simulates the effects of installing the SVRC liners. When the SVRC liners are installed, water level changes in the range of plus or minus (+/-) 1 to 3.5 feet occurs within a half mile upgradient (mounding) and a half -mile downgradient (shadowing). There are two registered McCiane Water Engineering, LLC 1669 Apple Valley Rd. • Lyons, CO 80540 • Phone: (303) 917-1247; email: demiis@mcgranewater.com SVRC Groundwater Evaluation January 2024 Page 3 of 58 wells within the mounding and four registered wells located within the shadowing areas as summarized in Table 1: Table 1 - Pit Scenario 1 Impacts - Only SVRC (no Mitigation Water Level Changes In Registered Wells (Run 11 It # Name Twn Rng Sec Modeled Change (ft) Link to DWR Permit Mounding (+) 58-WCB KROSH & HANSEN 4 N 66 W 30 +1.2 https://dwr.state.co.us/Tools/WeIlPermits/C620058 54-WCB HANSEN, CASTOR 4 N 66 W 30 +1.9 https://dwr.state.co us/Tools/WeIlPermits/C620054 Shadowing (-) 19924-U EPPINGER LINDA KAY 4 N 66 W 19 r -2.1 https://dwr.state.co.us/Tools/WeIlPermits/9062686 19924-W EPPINGER LINDA KAY 4 N 66 W 19 -1.2 https://dwr.state.co.us/Tools/WellPermits/9062688 19924 -V -R EPPINGER LINDA KAY 4 N 66 W 19 r -1.1 https://dwr.state.co.us/Tools/WeIlPermits/9062687 185466-A EATON CATTLE CO 4 N 66 W 19 -1.1 https://dwr.state.co.us/Tools/WeIlPermits/03719518 The combined effect of upgradient mounding and seasonal water level increases may increase water levels to within 10 feet of ground level at these wells, which may require upgradient mitigation to prevent their basements (if they exist) from flooding. SVRC Mitigation Options We evaluated two mitigation options, both included installing two vertical dewatering wells upgradient of the SVRC and pumping a combined total of approximately 400 gpm total to offset upgradient mounding. The preferred option is to discharge the dewatering wells into a pipeline belonging to the applicant (CCWCD) which discharges near the SPR approximately 3 miles to the north. By doing so, the shadowing will increase due to drawdown from the extraction wells. Figure All shows that the downgradient shadowing of -1 to -3 feet extends approximately one-half mile from the SVRC. Eight wells are affected and summarized in Table 2. Table 2 - Pit Scenario 1- Only SVRC (with Flow to CCWCD Pipeline Downgradient Shadowing in Registered Wells (Run 1Mit-a) Permit M Name Twn Rng Sec Modeled Change (ft) Link to DWR Permit 19924-U EPPINGER LINDA KAY 4 N 66 W 19 D -2.7 https://dwr.state.co.us/Tools/WeIlPermits/9062686 19924-W EPPINGER LINDA KAY 4 N 66 W 19 -1.7 https://dwr.state.co.us/Tools/WelIPermits/9062688 19924 -V -R EPPINGER LINDA KAY 4 N 66 W 19 D -1.5 https://dwr.state.co.us/Tools/WeIlPermits/9062687 185466-A EATON CATTLE CO 4N 66 W 19 -1.5 https://dwr.state.co.us/Tools/WelIPermits/0371951B 14028-R UNITED WATER & SANIT) 4 N 66 W 30 -1.5 https://dwr.state.co.us/Tools/WeIlPermits/9061848 19924 -T -R EPPINGER LINDA KAY 4 N 66 W 19 -1.4 https://dwr.state.co.us/Tools/WeIIPermits/9062685 23014 BRECKON, HOWARD W 4 N 66 W 19 -1.3 https://dwr.state.co.us/Tools/WeIlPermits/9062965 11113-R HS LAND & CATTLE LLC 4 N 66 W 30 -1.3 https://dwr.state.co.us/Tools/WellPermits/9060576 11114-R HS LAND & CATTLE LLC 4 N 66 W 30 -1.3 https://dwr.state.co.us/Tools/WeIlPermits/9060577 187426-A MORAN, TERESA 4N 66 W 30 -1.3 https://dwr.state.co.us/Tools/WellPermits/0385674D 19924 -R -R HS LAND & CATTLE LLC 4 N 66 W 19 -1.0 https://dwr.state.co.us/Tools/WeIlPermits/0343851 The second mitigation option is to install an exfiltration drain downgradient of the SVRC to infiltrate the 400 gpm pumped by the dewatering wells. This will effectively mitigate pit impacts as shown in Figure A13. Although this run demonstrates that exfiltration drains are effective, we believe pumping into CCWCD's pipeline may provide additional shadowing benefits downgradient and the small declines will not affect the yield of nearby wells. Impacts by Other Pits In Appendix B, we evaluated four additional pit development scenarios including: McGrane Water Engineering, LLC 1669 Apple Valley Rd. • Lyons, CO 80540 • Phone: (303) 917-1247; email: dermis@mcgranewater.com SVRC Groundwater Evaluation January 2024 Page 4 of 58 • Pit Scenario 2 • Pit Scenario 3 • Pit Scenario 4 • Pit Scenario 5 — Only Section 20 Pits (Run 2); — Only Monarch Pits (Run 3); - Both Section 20 and Monarch Pits (Run 4); and - All Pits (Section 20, Monarch and SVRC) — Run 5. In each scenarios, we simulated pits in the model by assigning pit cells as impermeable "no -flow" cells and then calculated the "change" compared to water levels from the Pre -pit Run. Mitigation Runs In the Mitigation Runs, we attempt to minimize the upgradient change by simulating dewatering wells and or infiltration drains upgradient of pits to reduce drawdown. For Scenario 1 (Only SVRC Pit), discussed in Appendix A, we used two dewatering wells. For the Section 20 Pit, the applicant plans to install both drains and wells to mitigate upgradient mounding, and simulate downgradient recharge through a surface recharge pond located outside the center of the downgradient liner (Civil Resources, 2021 Sheet 6). To date, we are uncertain what Monarch's mitigation plan will entail, so we chose to evaluate the use of exfiltration drains. We believe that installing downgradient exfiltration drains will be more cost effective and require less maintenance and augmentation challenges than using recharge ponds, which is why we used them in this analysis. For Scenarios 2-5, we evaluated horizontal infiltration drains to mitigate mounding. Groundwater flow into a drain is controlled by the conductance term (COND) which is a function of the drain area, permeability of the gravel fill around the drain and depth below the water surface. We assume a 1 foot cross-sectional drain surrounded by gravel with a hydraulic conductivity (K) of 400 ft/day. COND is calculated internally by the model using the digitized length of drain across each model cell. For a 100 foot -long model cell, COND = 40,000 ft^2day (400 ft/day x 1 ft x 100 ft). We determined the depth of each upgradient drains by trial -and -error to achieve zero drawdown, and then iteratively "hard wired" that amount as recharge using the Modflow "Recharge" package. Using this approach to simulate exfiltration drains, we were able to spread the water out over a longer stretch than could be achieved using a real drain where the water will drain along the path of least resistence. We report the predicted drain flow for each model scenario which, in reality, will vary depending on the drain design and site -specific aquifer properties. Pit Scenario 2 — Only Section 20 Pits Figure Bl shows the impact of liners installed in Section 20 Pits under Scenario 2. The model predicts mounding in the range of +1 to + 6.2 feet in approximately 25 wells. Shadowing is expected in the range of +1 to + 6.4 feet in approximately 87 wells. We did not tabulate the well owners affected since it is not the purpose of this evaluation. To mitigate upgradient mounding Figure B2 shows a dashed yellow line that represents the upgradient drain and a solid yellow line representing the exfiltration drain along the northern pit boundary. The simulated drain flow is approximately 1467 gpm which reduces water level changes to nearly zero. McGrane Water Engineering, LLC 1669 Apple Valley Rd. • Lyons, CO 80540 • Phone: (303) 917-1247; email: dennis@mcgranewater.com SVRC Groundwater Evaluation January 2024 Page 5 of 58 Pit Scenario 3 — Only Monarch Pits Under Scenario 3 only Monarch Pits are simulated. The change in water levels associated with just the liner show mounding is expected in the range of +1 to + 4.2 feet in approximately 4 wells (See Figure B3). Shadowing is expected in the range of -1 to -3.7 feet in approximately 76 wells. Most impacts can be reduced to below +/- 1 foot if an upgradient drain is installed in front of Cell 1 (elevation 4742 ft) and Cell 3 (elevation 4733 ft), and an exfiltration gallery is installed downgradient to reinfiltrate the groundwater (Figure B4). The simulated combined drain flow is approximately 1016 gpm. Pit Scenario 4 — Section 20 and Monarch Pits Under Scenario 4, both Section 20 Monarch Pits are simulated. Mounding is expected in the range of +1 to + 5.9 feet in approximately 27 wells (See Figure B5). Shadowing is expected in the range of -1 to -6.4 feet in approximately 132 wells. Most impacts can be reduced to below +/- 1 foot if upgradient and downgradient drains are installed at both pits (Figure B6). Model results show the infiltration and exfiltration drains will flow approximately 2373 gpm. Pit Scenario 5 —All Pits (Section 20, Monarch and SVRC) Under Scenario 5 only Monarch Pits are simulated together. The change in water levels associated with just the liners, shows mounding in the range of +1 to + 5.9 feet in approximately 27 upgradient wells (Figure B7). Shadowing is expected in the range of -1 to -8.7 feet in approximately 133 downgradient wells. Most impacts can be reduced to below +/- 1 foot if upgradient and downgradient infiltration and exfiltration drains are installed at both the Section 20 and Monarch pits. At the SVRC, we simulated two upgradient wells, each pumping 225 gpm (450 gpm total). Using an exfiltration drain (Figure B8), the total drain inflow is approximately 2367 gpm and exfiltration drain outflow is 2817 which includes the amount pumped. In the preferred mitigation run for SVRC, where pumped water is exported off -site into the CCWCD pipeline (Figure B9), the infiltration and exfiltration drain flows are the same (2367 gpm). Both mitigation runs are equally effective at reducing shadowing downgradient which is why the applicant prefers to discharge into the CCWCD drain. Table 3 summarizes each pit scenario impact and mitigation run. Table 3 - Pit Run Summary Pit Scenario Run Description Without Mitigation With Upgradient Mitigation Downgradient Mitigation Fig. Number or Wells with Water Level Change Well Infiltration Exfiltration Fig. Pumping Gallery (gpm) (gpm) Drain (gpm) Number or Wells with Water Level Change Mounding Shadowing >lft >lft Mounding Shadowing >lft >lft 1 Only SVRC All 2 4 Al2 400 na na 0 8 A13 400 na 400 0 0 2 Only Section 20 Pit B1 25 87 B2 na 1467 1467 0 0 3 Only Monarch Pit 83 4 76 B4 na 1016 1016 0 2 4 Section 20 and Monarch Pits 85 27 132 B6 na 2373 2373 0 0 5 Section 20, Monarch and SVRC (All Pits) B7 27 133 68 450 2367 2817 0 0 B9 450 2367 2367 0 0 CONCLUSTIONS AND RECOMMENDATIONS We conclude: 1. Over the past 20 years, rising groundwater levels in the G i I crest area has been documented by the Colorado Geological Survey (Barkman and Others, 2014). McCrane Water Engineering, LLC 1669 Apple Valley Rd. • Lyons, CO 80540 6 Phone: (303) 917-1247; email: demos@mcgranovairr.com SVRC Groundwater Evaluation January 2024 Page 6 of 58 Groundwater levels increases of approximately 10 - 15 feet over the past 30 years are common over most of the model area. However, near the SVRC, monitoring well data suggests increases have slowed to only about 1 foot in the past decade. This is much less than the average 5 -foot seasonal fluctuation measured at the SVRC. 2. Based on updated recent depth to water maps, the depth to water near the SVRC site varies and in some areas upgradient of the pit are currently less than 10 feet below the ground surface. Groundwater levels downgradient near the mapped SPR are less than 5 feet from the ground surface. 3. Model simulations demonstrate that the SVRC liners will cause +1- 3.5 feet changes water levels up and downgradient which may increase levels above a depth of 10 feet. Potentially "impacted" wells are listed in the above tables. 4. Upgradient mitigation by pumping approximately 400 gpm from two wells can alleviate upgradient impacts (Figures Al2 and A13). 5. Carefully designed and constructed infiltration and exfiltration drains can effectively offset potential impacts. 6. We evaluated mitigation measures for the SVRC with and without other pits being constructed. In both options, upgradient dewatering will effectively mitigate upgradient mounding. We believe it would be more beneficial to vicinity property owners if pumped groundwater was transported off -site in a pipeline belonging to CCWCD. However, if that option is not approved, pumped groundwater can be reinfiltrated which will offset downgradient shadowing. 7. Other pits, including Monarch and Section 20 are expected to have much greater and broader impacts as shown in other model scenarios (Appendix B). 8. The combined impact of both the Monarch and Section 20 pits (Scenario 4, Figure B6) could impact hundreds of wells within a range of +9 feet of mounding to -6 feet of shadowing unless mitigation measures are implemented. 9. At all planned lined pit sites, careful mitigation using infiltration and exfiltration drains can effectively mitigate pit impacts. 10. We recommend that ongoing monitoring occur throughout the Gilcrest area to evaluate ongoing water level changes that may be naturally occurring or resulting from approved pit development. McGrane Water Engineering, LLC 1669 Apple Valley Rd. • Lyons, CO 80540 • Phone: (303) 917-1247; email: dennis@mcgranewater.com SVRC Groundwater Evaluation January 2024 Page 7 of 58 REPORT SUMMARY FIGURE 1 McCrane Water Engineering, LLC 1669 Apple Valley Rd. • Lyons, CO 80540 • Phone: (303) 917-1247; email: demiis@mcgranewater.com Page 8 of 58 FIGURE 1 Site Map Weld County, Colorado Sources: 1) IT Consulting Pit outlines; 2) 0arkmann, 7014, Table 2017TM-1; USGS DEM 10m; CDSS Well Database; Google Earth Imagery (2021); Map Legend r _I Study Area 2-- Eastern Slough Q Model Area '`... Western Slough" Sweet Valley Reservoir -- Western Canal Complex Pit Sweet Valley Reservoir Q Section 20 Pit Complex MW Monarch Pit =i Section 20 Pit MW '"Standing water per Google Earth Image June, 2021. ^Yellow symbols represent DWR that were not used for geologic characterization. O Well WL-M-001 (ref, 2) DWR Wells Used for Geologic Characterization^ *0 Domestic/Stock IN Irrigation * Monitoring/Sampling Q Municipal * Dewatering/Other/NA Date: January 2024 Datum/Projection: NAD83/Colorado State Plane North, lent SVRC Groundwater Evaluation January 2024 Page 9 of 58 APPENDIX A - GROUNDWATER EVALATION AND MODELING The proposed Sweet Valley Reservoir Complex (SVRC) is located approximately 2 miles west of Gilcrest, Colorado in Section 30, Township 4 North, Range 66 West (6th PM). The complex consists of two pits each consisting of approximately 40 acres. The site is located approximately 1 mile east of the South Platte River (SPR). In this appendix we will discuss: • The available data and study area hydrogeology; • Groundwater modeling assumption and model construction; • Model calibration; • Modeling results of the Pre -pit (pre -liner) run; • Modeled water level changes caused by the SVRC and mitigation options; and • Model error and uncertainty. In Appendix B (following), we evaluate the impact of other individual pits and joint impacts of combined pit scenarios. Available Data We compiled hydrogeologic data from: • Existing reports from the US Geological Survey, Colorado Geological Survey and Colorado Division of Water Resources (see Sources below); • Permitted well "completion reports" filed with the State Engineer's Office ("SEO" wells) located within approximately 2 miles of the proposed pit; and • Four monitoring wells installed around the SVRC and seven monitoring wells belonging to the Section 20 pit provided by J&T. Figure la, lb, lc and ld show the overall study area, model area, pit properties, permitted wells color coded by use, well permit numbers and SVRC and Section 20 private monitoring wells. They include 404 permitted wells located within the study area. Abandoned wells and other private monitoring wells were excluded because they cannot be impacted. The remaining wells shown on the figures are used for irrigation (226), domestic water supply (125), commercial (15) stock (7), industrial (4) municipal (2) and other purposes. Because the density of wells increases to the east toward the Town of Gilcrest, we did not utilize all the well data to characterize the aquifer. Figure 1 (shown before Appendix A) shows wells (colored yellow) that were excluded from the hydrologic data set. The remaining compiled data (Table Al) includes: the permit number, well owner, Colorado State Plane coordinate, USGS Digital Elevation Model (DEM) elevation, registered use, well depth, and reported static water level (SWL). Well use, depth and water level statistics are discussed below. HYDROGEOLOGY McC ane Water Engineering, LLC 1669 Apple Valley Rd. • Lyons, CO 80540 • Phone: (303) 917-1247; email: dennis@mcgranewater.com SVRC Groundwater Evaluation January 2024 Page 10 of 58 The hydrogeology of the SPR alluvial aquifer is described in detail by the US Geological Survey (Smith and Others, 1964, Hurr and Schneider, 1972, Robson, 2000, Lindsay and Others, 1998 and 2005). More recently, the Colorado State University, (CSU, 2013) updated the surface water and groundwater hydrology, while the Colorado Water Conservation Board prepared an extensive study on the SPR as part of the South Platte River Decision Support System (SPDSS) project (CDM, 2006 and 2013). In 2014, in response to observed evaluated water levels around Gilcrest (2 miles to the east), and LaSalle, the Colorado Geological Survey (CGS) conducted a study (Barkmann and Others, 2014) focusing on groundwater level trends. Barkmann references the SPDSS data base for their analysis. The most recent geologic mapping was also prepared by the Colorado Geological Survey (Palkovic and Others, 2018), which we used to better refine the western edge of the alluvial aquifer. Surficial Geology Figure A2 shows the site surficial geology mapped by the CGS (Palkovic and Others, 2018). The model area consists of alluvial deposits within the SPR floodplain. The alluvium consists of alluvial (Qa) sand and gravel (geologic map symbols: Qa, Qat, Qa2, and Qa3 ) based on their age (recent to older). The alluvial aquifer, consisting of mostly sand and gravel, extends below wind blow dune sand and loess (fine silt and sand) deposits (Qe) along the east side of the model near Gilcrest. Well Depth Figure A2 also shows the reported well depths from 288 wells (Table Al) ranging from 5 to 200 feet and averaging 58 feet within the study area. We assume that the depth of the wells is at the base of the alluvial aquifer (ie. top of bedrock). Assuming this, the alluvium appears to deepen from approximately 40-60 feet near the SPR to 80-90 feet along the east side of the model. Bedrock Elevation Figure A3 shows the elevation contours of the structural top of bedrock digitized from Robson and Others (2000) based on the ground surface topography above the floodplain combined with the elevation of bedrock determined from SEO well data. The well elevation data plotted from Table Al is consistent with the Robson contours and those prepared by the CGS (Barkman and Others, 2014, Fig. 7). The contours show that the bedrock drops abruptly from outcropping Fox Hills Sandstone west of the model into a paleochannel (erosional remnant) beneath the SPR. The bedrock surface rises in the center axis of the model and then drops into a deeper paleochannel that extends along the eastern side of the model beneath the Town of Gilcrest. This is consistent with the well depth data discussed above and shown in Figure A2. Water Levels We initially prepared a water table map (Figure A4a) using all SEO well data and contours prepared by Robson (2000). We then updated the map using SVRC monitoring well data measured in December, 2023 (Table A2) and Section 20 monitoring wells (Table A3) measured in December, 2021 (orange squares). The higher recent measurements near older wells suggest that water levels have risen approximately 10-15 feet in the pit vicinity since 2000 when Robson made his interpretation of reported values in the SEO well database. We updated more recent water level contours prepared by the Colorado Geological Survey that represent spring 2012 conditions (Topper and Others, 2014, Fig.10), using the recent monitoring well data and surveyed surface water elevations provided by J&T (Figure A4b, ref. blue diamonds). The resulting solid contours on Figure A4b represent CGS 2012 contours with dashed contours having a higher degree of uncertainty. The dotted contours were updated by MWE. We McGrane Water Engineering, LLC 1669 Apple Valley Rd. • Lyons, CO 80540 • Phone: (303) 917-1247; email: demiis@mcgranewater.com SVRC Groundwater Evaluation January 2024 Page 11 of 58 believe Figure A4b represents recent, pre -pit conditions. We used Figure A4b contours and monitoring well level measurements to calibrate the groundwater model. Groundwater flows perpendicular to the water level contours, often preferentially through zones of higher permeability and thickness (the product of which is referred to as the transmissivity). The water table elevation at the southwest corner of the model is at approximately 4760 to 4770 ft (msl) and flows northwest toward the SPR. Most of the groundwater entering the model is from the south. The water table is tied to DEM elevations of the SPR at 10 -ft intervals. The water table gradient falls approximately 35 feet from approximately 4730 ft (msl) on the southwestern end to 4695 ft (msl) on the northwestern corner. The contours show that the SPR is a gaining stream throughout the reach. Depth lo Water (Ii) The CGS prepared a depth to water map using their spring 2012 water table (Barkmann and Others, 2014, Fig. 7) that shows shallow groundwater within 5-15 feet of the ground near the SPR and mapped sloughs, and near Gilcrest. We prepared an updated Depth to Water maps (Figures A5a, A5b, A5c, and A5d) using current water table conditions (Figure A4b). The maps show that the depth to water is mostly greater than 15 feet deep at the SVRC, Monarch and Section 20 pits, with shallower groundwater (within 10 -15 feet) upgradient. The depth to water is only less than 5 feet deep close to the SPR and in the vicinity of Gilcrest (Figure A5b). Seasonal Water Table Piucluath.ws Monitoring Well WL-M-001 is located approximately 400 east of the north SVRC as shown on Figure A2. It was used by the CGS (Barkmann and Others, 2014, Table 2017TM-1) for their water level change evaluation. J&T provided us the continuous water level measurements plotted below. Depth to Water (ft) — Monitoring Well WL-M-001 (Barkmann, 2014, Table 2017TM-1) 0 25 - N o W W N N N O O O . µ F O1 V CO N) N O From this plot, we conclude: N) O O t- • - Depth to Water (ft) Elevation (ft msl) — — Linear (Depth to Water (ft)) Date 4758.5 4753.5 4748.5 4743.5 4738.5 4733.5 Water Elevation (ft msI) McCrane Water Engineering, LIE 1669 Apple Valley Rd. • Lyons, CO 80540 • Phone: (303) 917-1247; email: demus@mcgranewater.com SVRC Groundwater Evaluation January 2024 Page 12 of 58 • The depth to water in the vicinity of the SVRC is approximately 15-20 feet below ground level; • Water levels away from the SPR fluctuate seasonally in the range approximately 5 feet per year; • High water levels occur in late September and early October most years; • The average water table level rose approximately 1 foot from 18 to 17 feet in the last decade; and • December water levels (used to upgrade the recent water table map (Figure A4b) closely represent the average water table depth, therefore • A reasonable "recent" average level plotted on Figure A4b is approximately 4741.5 ft. Saturated Aquifer Thickness We calculated the aquifer saturated thickness as the difference between the recent water table (Figure A4b) and the top of bedrock (Figure A3). Figure A6 shows how the average saturated aquifer thickens approximately 30 - 40 feet near the SPR to 60 - 86 feet within the paleochannel beneath the Town of Gilcrest. Well Yield Well yield is proportional to the aquifer saturated thickness. We plotted reported well yields extracted from the State's well database (Table Al) on Figure A7. Well yields range from 5 gpm for domestic wells to over 2500 gpm for irrigation wells. Aquifer Transmissivity Figure A8 shows the contoured aquifer transmissivity (T) which is the product of the aquifer hydraulic conductivity (a measure of permeability) multiplied by the saturated thickness (Figure A6). The computed transmissivity ranges from less than 50,000 gpd/ft near the SPR to over 300,000 gpd/ft near Gilcrest. The resulting transmissivity distribution used in our model is consistent with the CGS (Barkmann, 2014, Fig. E9) who reportedly refined aquifer properties from the SPDSS model (CDM, 2006, Fig. 7a). We plotted transmissivity values determined from SPDSs modeling which shows that our and Barkmann's values are typically higher. Hydraulic Conductivity (K) The transmissivity is equal to the hydraulic conductivity (K), a measure of permeability multiplied by the saturated thickness (Figure A9). The K distribution and values are similar to those determined for the Section 20 model (Civil Resources, 2021, Sheet 3). See "Model Calibration - Pre -pit Run" section below. MODELING We used the Groundwater Vistas (GV) pre and post processor (version 8.3 Build 87, Environmental Solutions, Inc.) to construct and run a MODFLOW2000 (Harbaugh et al, 2000) model and display the results. We exported processed cell -by -cell flow terms from the model into ArcView GIS software to process prepare report figures. The model consists of one layer, 180 rows and 220 columns using 100 -foot square model cells. (180,000 feet high and 220,000 feet wide). The active model area is approximately 12.7 square miles. Precipitation and evapotranspiration are not considered in the model runs because we do not expect there to be a significant change in either of these parameters resulting from pit lining or installing drains. Therefore, it is unnecessary to spend additional time to understand and simulate them. McGrane Water Engineering, LLC 1669 Apple Valley Rd. • Lyons, CO 80540 • Phone: (303) 917-1247; email: Bennis@mcgranewater.com SVRC Groundwater Evaluation January 2024 Page 13 of 58 Since both the pre -pit and post -pit steady-state runs represent average groundwater conditions, the differences shown in the figures below are average differences. As we will discuss later, these changes are comparable and sometimes exceed the average annual water table fluctuations. In addition, shadowing downgradient may actually benefit downgradient water users by dampening what was a natural increase in water levels. For this reason, we need to keep the discussion of "change" in perspective compared to seasonal changes that also will occur. Boundary Conditions The model is centered on the SVRC but extends up and downgradient approximately 2 miles. The model is rotated 40.49 degrees counterclockwise so that the SPR is parallel to the active western model boundary. Model cells west of the SPR were turned off (using Modflow "no -flow" cells) because significant groundwater flow does not flow underneath the SPR. The bottom bedrock surface was digitized in ESRI GIS software and imported into the model on a 100 ft grid. The south, north and east sides of the model consist of MODFLOW Constant Head (CH) cells that establish a fixed gradient within the stream alluvium. We assigned MODFLOW "River" cell stage elevations using 10m DEM data and interpolating in between. Modflow "River" Package We modeled the aquifer's connection to the SPR and sloughs located between the planned pits and the SPR using the MODFLOW "River" package which uses a streambed conductance term (COND) to calculated flow from one to the other in proportion to the hydraulic gradient between surface water and groundwater. . COND is calculated as the product of the streambed unit conductance (Ksb/m) times the wetted river area (length * width). Ksb is the streambed vertical permeability and m is the streambed thickness (m) which we assume is 1 ft so that Ksb/m equals Ksb. CDM-Smith (2006, Task 34.3 Streambed Conductance Figure 9) evaluated the streambed permeability at two sites (SC -O7 and SC -08 located within 10 miles of the SVRC pit, and came up with Kh values ranging from 137 ft/day to 377 ft/day. Tests conducted in 2009 by Leonard Rice Engineers, Inc. (Denver, Co.) near Ft. Lupton (in Twn. 2N, Rng. 66W, Sec. 18) arrived at a Ksb value of 36 ft/day (Miller, 2009). Therefore, to be conservative, we decided to reduce the connection to the river by using a Ksb of 36 ft/day. For sloughs, we assume that fine-grained silt that accumulates and reduces Ksb by a factor of 10 to 3.6 ft/day. Using Google Earth imagery taken in October 2017, we measured the SPR river widths at the southwest corner of the model (115 ft), center (128 ft) an northwest (134 ft) corners of the model area (average = 126 ft). Representative MODFLOW River cell parameters are shown in the table below. For the eastern slough we measured the width at three locations along the "S" shape which averaged approximately 100 feet. For the western slough located west of the Monarch pits, the slough width averages 30 feet. Table A-4 shows COND variables. McGrane Water Engineering, LLC 1669 Apple Valley Rd. • Lyons, CO 80540 • Phone: (303) 917-1247; email: demiis@mcgranewater.com SVRC Groundwater Evaluation January 2024 Page 14 of 58 Table A-4 River Cell Parameters MODFLOW "River" Cell Parameters Location Width (ft) Cell Length (ft) Streambed Conductance Ksb/m (day -1) COND (ft^2/day) South Platte River 126 100 36 452400 Eastern Slough 100 100 3.6 36000 Western Slough 50 100 3.6 18000 Calculated CONDs range from 18,000 ft^2day for the western slough to 452,400 ft/2day for SPR River cells. The actual COND for each model cell is calculated by the model based on the digitized river or slough length in each "River" cell. The exchange of water between the river cells and aquifer is determined by multiplying COND by the head difference in the river and the underlying model cell. With such a high COND values (even for the western slough), we believe there is a free flow of water between groundwater and surface water in the model. Model Calibration - Pre -pit Run We calibrated the model to Pre -Pit Run (Figure A4b). The process of calibration involves changing hydraulic conductivity values until the modeled cell elevations closely match observed values for the model cells they are in. Figure A10 shows the modeled water table contours (aqua colored) compared to blue "target" contours (Figure A4b). The calibration "residuals" are the differences between observed monitoring well values compared to model generated output. Blue labels show where the observed values are higher than the modeled values, and red values are where observed values are below the modeled values. Calibration statistics and plotted observed verses modeled heads are shown in Table A-5. Table A-5 Pre -pit Run Calibration Statistics Modeled Water Table Elevation (ft. msl) 4750 4745 4740 4735 4730 4725 4720 4715 ra y o 9996x 4710 4710 4720 4730 4740 4750 Observed Water Table Elevation (ft.msl) Residual Mean 1.915 Absolute Residual Mean 2.141 Residual Std. Deviation 2.288 Sum of Squares 97.938 RMS Error 2.984 Min. Residual -0.912 Max. Residual 5.871 Number of Observations 11.000 Range in Observations 30.360 Scaled Residual Std. Deviation 0.075 Scaled Absolute Residual Mean 0.071 Scaled RMS Error 0.098 Scaled Residual Mean 0.063 If there were perfect match, the observed verses modeled data would plot on a straight line with a perfect 1:1 relationship. The best fit line shown above has a slope of 0.9996:1 which is a very close to perfect. The Root Mean Squared (RMS) error (2.984 ft) is the square of the difference between the observed and modeled values (aka "residual"). We feel this value is reasonable considering the data comes from two different years when precipitation recharge, well pumping, river stage fluctuations and agricultural return flow vary. McGrane Water Engineering, LLC 1669 Apple Valley Rd. • Lyons, CO 80540 • Phone: (303) 917-1247; email: deniiis@mcgranewater.com SVRC Groundwater Evaluation January 2024 Page 15 of 58 Upon close inspection of the residuals on Figure A4b, the model does a good job matching heads at the Section 20 pit, but the modeled heads are 5-6 feet lower than observed levels at the SVRC. There appears to be a nearly a 10 -foot gradient across the SVRC site that the model does not closely replicate. We do not believe this is a critical for evaluating water level "changes" resulting from future lined pits since there is low risk that lined pits with mitigation will likely cause additional water level increases. Hydraulic Conductivity (K) Distribution We spent a considerable time trying to reduce the RMS by changing the K zoning and values. The K distribution was guided by the distribution created by Civil Resources for the Section 20 model (Civil Resources, LLC, December, 2022). Civil Resources (CR) "calibrated" their model to a Pre - pit water table constructed using monitoring well observations and published SEO well data. Their resulting K distribution showed a zonal increase from 370 to 805 ft/day from the SPR eastward through the SVRC and Section 20 sites (CR, 2022, Sheet 3). Our "best" calibration results occurred when we used a K zoning that increasing from 75 at the SPR to 400-600 ft/day at the SVRC and Section 20 sites as shown in Figure A9. Mass Balance Table A6 shows the model mass balance results of the Pre -pit Run (Run: Mein_SS6) which shows the inflow and outflow components that include alluvial aquifer inflow (19.84 cfs) and outflow (8.95 cfs), and 10.89 cfs (11.60-0.71) of river gains. Table A6 — Pre -Pit Run Mass Balance Mass Balance (cfs) Source Inflows Outflows Aquifer 19.84 w -8.95 River 0.71 -11.60 Total 20.54 -20.54 Error = -0.006% The total aquifer inflow and outflow balance at 20.54 cfs. The mass balance error is less than .01 percent. 0.01% based on the difference between inflows and outflows. Water Level Changes Caused by -the SVRC Pit Scenario 1 (Run 1) simulates water level changes resulting from installing the SVRC liner compared to the Pre -pit Run. After installation, the model predicts water level changes up to plus or minus (+/-) 3.5 feet. Figure All shows the mapped change. The change is greatest at the pit walls but grades outward approximately a half -mile upgradient (mounding) and half -mile downgradient (shadowing). There are two registered wells within the mounding and four registered wells located within the shadowing areas summarized below. Well permit 58-WCB experiences the greatest mounding at +1.2 feet whereas Well permit 18824-U experiences the greatest shadowing. McCrane Water Engineering, LLC 1669 Apple Valley Rd. • Lyons, CO 80540 • Phone: (303) 917-1247; email: demiis@mcgranewwater.com SVRC Groundwater Evaluation January 2024 Page 16 of 58 Table A-7 Pit Scenario 1 Impacts - Only SVRC (without Mitigation) Water Level Changes in Registered Wells (Run 1) It # Name Twn Rng Sec Modeled Change (ft) Link to DWR Permit Mounding (+) 58-WCB KROSH & HANSEN 4 N 66 W 30 r +1.2 https://dwr.state.co.us/Tools/WellPermits/C620058 54-WCB HANSEN, CASTOR 4 N 66 W 30 r +1.9 https://dwr.state.co.us/Tools/WeIlPermits/C620054 Shadowing (-) 19924-U EPPINGER LINDA KAY 4 N 66 W 19 ' -2.1 https://dwr.state.co.us/Tools/WellPermits/9062686 19924-W EPPINGER LINDA KAY 4 N 66 W 19 -1.2 https://dwr.state.co.us/Tools/WeIlPermits/9062688 19924 -V -R EPPINGER LINDA KAY 4 N 66 W 19 -1.1 https://dwr.state.co.us/Tools/WeIlPermits/9062687 185466-A EATON CATTLE CO 4 N 66 W _ 19 A -1.1 https://dwr.state.co.us/Tools/WellPermits/0371951B With the depth to water being 10 to 15 feet deep at these wells (Figure A5d), the additional 1-3 feet of mounding in addition to the +1- 5 -foot seasonal fluctuation may cause flooding of basements if they exist. Therefore, we recommend monitoring and mitigation (drains or wells) upgradient of the SVRC to protect these wells. SVRC Mitigation Options We evaluated two mitigation options for the SVRC; both include installing two vertical dewatering wells upgradient of the SVRC to offset the expected mounding. For both runs, upgradient mounding will be eliminated by two pumping wells located approximately 800 feet apart, each pumping 200 gpm total (400 gpm total). The preferred option (Run 1 Mit-a) is to discharge the dewatering wells into a pipeline belonging to the CCWCD Water Conservancy District (CCWCD) which discharges approximately 3 miles to the north into the SPR. By doing so, the downgradient shadowing affect will increase due to drawdown from the extraction wells. Figure Al2 shows that the downgradient shadowing of -1 to -3 feet extending approximately one-half mile from the SVRC. Eight wells are affected and summarized in the table below. Pit Scenario 1- Only SVRC (with Mitigation into CCWCD Pi cline Downgradient Shadowing in Registered Wells (Run iMlt-a) Permit # Name Twn Rng Sec Modeled Change (ft) Link to DWR Permit 19924-U EPPINGER LINDA KAY 4 N 66 W 19 -2.7 https://dwr.state.co.us/Tools/WelIPermits/9062686 19924-W EPPINGER LINDA KAY 4 N 66 W 19 -1.7 https://dwr.state.co.us/Tools/WeIlPermits/9062688 19924 -V -R EPPINGER LINDA KAY 4 N 66 W 19 ' -1.5 https://dwr.stete.co.us/rools/WellPermits/9062687 185466-A EATON CATTLE CO 4 N 66 W 19 -1.5 https://dwr.state,co.us/Tools/WellPermits/0371951B 14028-R UNITED WATER & SANIT, 4 N 66 W 30 -1.5 https://dwr.state.co.us/tools/WeIlPermits/9061848 19924 -T -R EPPINGER LINDA KAY 4 N 66 W 19 -1.4 https://dwr.state.co.us/Tools/WeIlPermits/9062685 23014 BRECKON, HOWARD W 4 N 66 W 19 -1.3 https://dwr.state.co.us/Tools/WellPermits/9062965 11113-R HS LAND & CATTLE LLC 4 N 66 W 30 -13 https://dwr.state.co.us/Tools/WeIlPermits/9060576 11114-R HS LAND & CATTLE LLC 4 N 66 W 30 -1.3 https://dwr.state.co.us/rools/WelIPermits/9060577 187426-A MORAN, TERESA 4 N 66 W 30 -1.3 https://dwr.state.co.usfrools/WelIPermits/0385674D 19924 -R -R HS LAND & CATTLE LLC 4 N 66 W 19 -1.0 https://dwr.state.co.us/Tools/WelIPermits/0343851 The second mitigation option is to install an exfiltration drain downgradient of the SVRC to infiltrate the 400 gpm pumped by the dewatering wells (Run 1Mit-b). This was done iteratively by first determining the amount of upgradient pumping and then recharging that amount using the Modflow recharge package along a line of "Recharge" cells along the downgradient pit boundary. The combined effect of the upgradient mitigation and downgradient exfitration is that no wells will expereince any significant (> 0.5 ft) change in water levels as shown in Figure A13. McCrane Water Engineering, LLC 1669 Apple Valley Rd. • Lyons, CO 80540 • Phone: (303) 917-1247; email: demiis@mcgranewater.com SVRC Groundwater Evaluation January 2024 Page 17 of 58 Although this run demonstrates that exfiltration drains are effective at mitigating downgradient shadowing, the applicant (CCWCD) believes that pumping into their pipeline is adequate. We agree because we believe that shadowing less than 3 feet will provide a benefit to homeowners who may be experiencing high groundwater conditions in recent years. In addition, a slight decline in water levels at the downgradient wells will not significantly reduce well yields. Model Error and Uncertainty Our modeled predictions include three types of error: 1) conceptual error (how the model is set up and what boundary conditions are used); 2) parametric error (how aquifer properties are measured and calculated); and 3) predictive error (which includes other influences such as seasonal recharge or climate change variations). It was beyond the scope of this project to quantitatively evaluate the sum of these errors. However, based on our professional opinion, we believe our model results are reasonably accurate for the purpose of this study. There is uncertainty in our predictions related to measurement and modeling error. USGS 10m DEM Data was used to assign ground elevations to off -site wells. The overall accuracy of expressed as the root mean square error (RMSE) for 1 Om DEM data for one study in (Haneberg, 2006) is 1.87 m or approximately +1- 6 ft. The accuracy of surveyed site well elevations data is much higher, probably within a tenth of a foot, and the accuracy of hand - measured water levels can vary several inches. SOURCES Barkmann, Peter E., Horn, Andy, Moore, Annette, Pike, Jeremy, and Curtiss, William. 2O14. Gilcrest/LaSalle Pilot Project Hydrogeologic Characterization Report. Colorado Geological Survey, prepared for the Colorado Division of Water Resources and the Colorado Water Conservation Board. CDM-Smith, April, 2O13a. South Platte Decision Support System Alluvial Groundwater Model Report. CDM-Smith, December 6, 2OO6. SPDSS Phase 3, Task 34.3 South Platte Alluvium Region Aquifer Property Technical Memoradum. Colorado Division of Water Resources (CDWR), June, 2O23. Well permit website search: Memorandum. Ilttl7;//11'1V11'.Ci1Vr.5tcltC .Go. us/Wellrerni i (Search/ Colton, Roger B., 1978. Geologic Map of the Bounder —Fort Collins — Greeley, Area, Colorado. US. Geological Survey Map I -855-G. 1: 100,000. Civil Resources, LLC., December, 2O22. Gilcrest Area Alluvial Groundwater Model Potential Impacts of Proposed Gravel Mining. Prepared for Red Tierra Equities, LLC. Greenwood Village, Co. 8O111 Colorado State University (CSU), December, 31, 2O13. HB 12-1278 Study of the South Platte River Alluvial Aquifer. Report to the Colorado Legislature. Environmental Solutions, Inc. April 2023. Groundwater Vistas version 8.30 build 87. Developed by Jim and Doug Rumbaugh. lulls_//www.Lroundwatermode Es.com/ McGrane Water Engineering, LLC 1669 Apple Valley Rd. • Lyons, CO 80540 • Phone: (303) 917-1247; email: demiis@mcgranewater.com SVRC Groundwater Evaluation January 2024 Page 18 of 58 Haneberg, August, 2006. Effects of Digital Elevation Model Erros on Spatially Distributed Seismic Slope Stability Calculations: An Example from Seattle, Wa. Environmental & Engineering Geoscience, Vol. XII, no. 3, August, 2006, pp. 247-260. Hurr, R. Theodore, Schneider, Paul A., and Others, 1972. Hydrogeoloeic Characteristics of the Valley -Fill Aquifer in the Greeley Reach of the South Platte River Valley. Colorado. USGS Open File Report 93-124. Prepared in cooperation with the Colorado Water Conservation Board. Lindsay, D.A., Langer, W.H., and Knepper, D.H., 2005. Stratigraphv. Lithology. and Sedimentary Features of Ouaternary Alluvial Deposits of the South Platte River and Some of its Tributaries East of the Front Range, Colorado. U.S. Geological Survey Professional Paper 1705. Lindsey, D. A., Langer, W. H., and Shary, J. F., 1998, Gravel deposits of the South Platte River valley north of Denver, Colorado, Part B - Quality of gravel deposits for ageregate: U. S. Geological Survey Open -File Report 98-148-B, 24 p. McDonald, M.G., and Harbaugh, A.W., 1988, A modular three-dimensional finite -difference ground -water flow model: Techniques of Water -Resources Investigations of the United States Geological Survey, Book 6, Chapter Al, 586 p. Miller Groundwater Engineering, June 29, 2009. Groundwater model evaluations of the Broomfield Well Field. Letter report to Dennis McGrane, Leonard Rice Engineers, Inc. Palkovic, Martin J, Lindsey, Kassandra O., Morgan, Matthew, L., 2018. Geologic Map of the Milliken Ouadrangle. Weld County, Co. U. S. Geological Survey Open -File Report 18-02, 2 plates. Robson, S.G., Heiny, J.S., Arnold, L.R. 2000. Geohydrology of the Shallow Aquifers in the Fort Lupton- Gi 'crest Area. Colorado. USGS Hydroologic Investigations Atlas HA -746-C. Sheet 2 of 5 — Altititude and Configuration of the Bedrock Surface. Smith, Rex O., Scheider, Paul A., Petri, Lester R., 1964. Ground -Water Resources of the South Platte River Basin in Western Adams and Southwestern Weld Counties Colorado., U.S. Geological Survey Water Supply Paper 1658. McGrane Water Engineering, LLC 1669 Apple Valley Rd. • Lyons, CO 80540 • Phone: (303) 917-1247; email: Bennis@mcgranewater.com SVRC Groundwater Evaluation January 2024 Page 19 of 58 APPENDIX A - TABLES (not in text) McGrane Water Engineering, LLC 1669 Apple Valley Rd. • Lyons, CO 80540 ■ Phone: (303) 917-1247; email: demiis@mcgranewater.com SVRC Groundwater Evaluation January 2024 Page 20 of 58 Table Al — SEO Well Data Used for IIvdrolosrie Analysis (1 of 4 Permit Number Applicant Name COSPN_ X COSPN_ Y Well Use Well Depth (ft bgs) Depth to Bedrock (ft bgs) Bedrock Elev. (ft bgs) Yield (gpm) SWL (ft bgs) SWL Elev. 5-WCB MONGOMERY, VIOLET 3184314 1351748 40 40 4685 -• 8 4717 633-WCB BETZ, CARL 3189427 1362510 32 32 4700 300 9 4723 62457 -OW FISCHER CONSTRUCTION 3179208 1346200 Dewatering 32 -- -- -• - 299322 BOOS, DONALD C 3184363 1345660 Domestic 60 •- •• -- 268087 EATON CATTLE CO 3191792 1356688 Domestic 60 -- — -- -- •• 268086 HS LAND & CATTLE LLC 3191792 1356688 Domestic 30 •• — -• -- 268085 268085 HS LAND & CATTLE LLC 3191862 1356664 Domestic 65 •• •- - -- -. 266836 CLARK GLENN & SANDRA 3182981 1343797 Domestic 60 -- - •- -• 232159 HENDERSON CONVENIENCE, LLC 3189642 1352388 Domestic 71 -- - -- -- 225280 GURLEY, GORDON 3187424 1343693 Domestic 40 -- -- -- -- 187426 GUTFELDER. BEN L 3189434 1348160 Domestic -- -- -• •• -• - 187425 GUTFELDER, BEN L 3187081 1349373 Domestic -- •- -- - -. 185466 EATON CATTLE CO 3189778 1350512 Domestic 31 - -- -- -• -• 155687 BERNHARDT, HERBERT 3187538 1357432 Domestic -- - -- •- _ 21288 BAIER, JOHN H 3183700 1347234 Domestic 38 •- -• -• — 17583 HILDENBRANDT P L MRS 3183718 1344593 Domestic 48 — -- -• •- -- 17919-A HAREN THOMAS & CYNTHIA 3199325 1354611 Domestic 69 •• -• -- -- .- 125566-A FARM BOY INC 3193791 1349232 Domestic 59 — •• -• •• -• 297336 KISSLER, JAMES D 3199436 1354355 Domestic 69 •• -- -- — -- 293470 ZABKA FARMS INC 3197391 1351934 Domestic 70 •• -- — -• -- 287458 LARA, REYMUNDO 3197578 1357305 Domestic 75 •- -- -- — — 260981 WIEDEMAN ROBERT & ESTHER 3193505 1349072 Domestic 90 -- -- -- 251239 COGBURN NORM & JUDY 3196095 1349392 Domestic 30 — -- •• — -- 207916 207916 INGRAHAM,JOSHUAG. 3200120 1354708 Domestic 200 •• - — -- -- 155183 WADDLE. RANDELL 3192134 1345135 Domestic 80345 KAMMERZEL, GEORGE 3191831 1361802 Domestic -• -• -• -• — -- 74711 KAMMERZELL JR GEORGE 3191832 1362153 Domestic -• -- -. .- -• 53399 TUCKER SHELTON & ELOISE R 3192553 1359589 Domestic 17919 KCB LLC 3199397 1355113 Domestic 71 •- -- — -• -• 17101 INGERSOLL, LYLE 3189685 1341190 Domestic 40 -- -• •- 21774 HODGSON, ALBERT 3194121 1359071 Domestic 30 27 4679 -- -- 275938 HS LAND & CATTLE LLC 3189490 1352792 Domestic 59 58 4692 •- -- 80345-A KAMMERZELL, GENE 3191831 1361802 Domestic 58 57 4650 15 20 4687 51636 TITCHENELL SR, JAMES E. 3192458 1358491 Domestic 34 32 4680 15 7 4705 268245 BETZ CLIFFORD &TRACY 3188231 1358362 Domestic 135 97 4634 100 26 4705 74711-A KAMMERZELL, GENE 3191807 1362152 Domestic 60 55 4671 30 20 4706 279370 JANECZKO, MICHAEL 3189246 1357432 Domestic 45 35 4678 15 6 4706 155687-A BERNHARDT, HERBERT 3187538 1357432 Domestic 25 19 4697 12 9 4707 225934 KNUTSON, RANDALL C 3194620 1355466 Domestic 50 45 4694 15 29 4710 267998 BUCKENDORF MATTHEW & SUSAN 3197755 1355639 Domestic 80 75 4665 14 28 4712 96112-VE BOHLING, FATIMER 3190443 1362273 Domestic 60 •- -• 15 18 4713 279437 NELSON CHARLES & PHYLLIS C 3195629 1355410 Domestic -- -- -• 14 29 4714 287458-A LARA, REYMUNDO 3197519 1357328 Domestic 51 •• — 23 25 4714 1123 CAW EQUITIES LLC (LEMBKE, ROBERT A.) 3195517 1351127 Domestic 34 -- — 15 34 4714 216684-A KARBOWSKI. RICHARD S. 3191992 1352433 Domestic 60 58 4691 15 34 4715 279438 OWENS, TOMM 3197132 1355419 Domestic 50 •- -- 15 26 4715 267999 HAREN THOMAS M & CYNTHIA 3197877 1356440 Domestic 80 75 4664 13 19 4720 23014 BRECKON. HOWARD W 3191502 1351098 Domestic 62 60 4689 15 28 4721 267997 WIEDEMAN CRAIG L & MICHELLE L 3197762 1354940 Domestic 80 75 4666 12 20 4721 187425-A GUTFELDER, BETTY A. 3187077 1349373 Domestic 55 51 4701 15 28 4724 185466-A EATON CATTLE CO 3189498 1350501 Domestic 60 57 4698 15 30 4725 251239-A HARDING CHARLES H & JULIE N 3196093 1349392 Domestic 60 58 4702 15 35 4725 297336-A KISSLER, JAMES D 3199382 1354371 Domestic 83 81 4670 15 24 4727 293470-A ZABKA FARMS INC 3197476 1352043 Domestic 62 58 4691 15 20 4729 187426-A MORAN, TERESA 3189430 1348160 Domestic 60 59 4701 15 31 4729 204050 JENKINS MARK & KAREN 3185519 1348707 Domestic 45 41 4708 15 19 4730 260982 WIEDEMAN ROBERT & ESTHER 3194539 1349103 Domestic 90 -- -- 14 25 4731 21288-A DANIELS, MARK J. 3183501 1346651 Domestic 54 — -- 15 29 4732 560-WCB NESOM, ALBERT 3200717 1355124 Domestic 94 94 4654 -- 15 4733 84422 FRITZLER, EDWARD J 3189675 1341241 Domestic 77 -- — 8 39 4734 155183-A WADDLE, RANDELL 3192144 1345136 Domestic 58 57 4708 15 31 4734 225280-A GURLEY, GORDON 3187424 1343673 Domestic 60 59 4708 15 32 4735 206387 FRANK, ALLAN 3186853 1346714 Domestic 52 50 4710 15 23 4737 McGrane Water Engineering, LLC 1669 Apple Valley Rd. • Lyons, CO 80540 • Phone: (303) 917-1247; email: demlis@mcgranewater.com SVRC Groundwater Evaluation January 2024 Page 21 of 58 Table Al — SEO Well Data Used for llyclrolole Analysis (2 of 4 Permit Number Applicant Name COSPN _ COSPN_ x Y Well Use Well Depth ft bgs) Depth to Bedrock ft b s) Bedrock Elev. (ft b s) Yield (gpm) SWL (ft bgs) SWL Elev. 270080 ARIAS, MICHAELJ. 3184442 1346854 Domestic 60 50 4712 ® 23 4738 266836-A CLARK GLENN & SANDRA 3182981 1343797 Domestic 50 48 4719 28 4739 155183-A DEROO. BRAD 3192134 1345214 Domestic 60 53 4712 26 4739 1336 HANSEN, CASTOR 3191567 1347134 Domestic 60 -- -• 20 4739 208693 BOOS, DON 3186895 1345028 Domestic 51 50 4715 23 4742 14539-R BOOS DONALD C & BARBARA 3186993 1343853 Domestic 60 60 4709 25 4744 184198 MARTINDALE JOHN &DELORES 3184822 1343796 Domestic 60 58 4706 20 4744 300729 EVANS, WILLIAM C. 3184502 1346194 Domestic 55 52 4710 14 4748 287838 VILLALOBOS, JOSE 3187288 1341014 Domestic 80 68 4704 17 4755 281801 MARTINDALE, DELORES 3186894 1341029 Domestic 72 69 4704 15 4757 282403 MARTINDALE, DELORES 3186852 1338648 Domestic 52 -• •- -- — 262824 PTASNIK, MICHAEL! 3181481 1343929 Domestic -• -- -- -• -- 232768 ELMORE. STAN 3185981 1359627 Domestic •- — •- •- 169399 SCOTTDALE RANCH 3181539 1344105 Domestic 54 •- -• -- -- 4933 BERNHARDT, BEN 3186255 1359035 Domestic 35 4705 •- 232768-A LONG, CLIFTON 3185981 1359627 Domestic 48 39 4706 18 4727 169399-A PTASNIK MICHAEL! &JOY 3181539 1344095 Domestic 54 52 4714 27 4739 262824-A PTASNIK, MICHAEL! 3181500 1343929 Domestic 60 49 4719 25 4743 93438 RICE HAROLD E & DORIS A 3187167 1338572 Domestic -- -- -- 26 4751 5124 RUTT, ELMER 3180986 1355067 Domestic 45 43 4803 15 4831 81-R BERNHARDT BEN & ESTHER 3187504 1359044 Irrigation 15 — -- -- -- 738-R MICHEL, REUBEN 3192770 1357687 Irrigation 27 -• - -- -- 7164-R HS LAND & CATTLE LLC 3187635 1347125 Irrigation 54 -- -• -- -- 42519-F BERNHARDT, DAIRY 3184728 1351757 Irrigation -- — — •- -- 22306-F-R BOOS, DONALD C 3186814 1345174 irrigation 60 -- -- -- -• 19924-V EPPINGER LINDA KAY 3190201 1349774 Irrigation 62 -• -• -- — 19924-R PHELPS, WILLIAM E 3188861 1351089 Irrigation 55 -- — -• -- 14477-F KASTEN CHERYL L & CARLENE M KASTEN 3182972 1352168 Irrigation •• -• -- -- 13688-R RED TIERRA EQUITIES, L.L.C. (LEMBKE, ROBERT) 3192832 1352427 Irrigation -- • • — — 12462-R SCHMIDT ROY A & MELVIN C & CLARENCE 3192800 1355046 Irrigation 49 — -- -- — 10223-R UNITED WATER & SANITATION DIST 3195480 1355076 Irrigation 64 -- — -• -- 10222-R UNITED WATER & SANITATION DIST 3195480 1355076 Irrigation 50 • • — -- 10044-R HS LAND & CATTLE LLC 3191482 1352419 Irrigation 75 — -• -- — 955-WCB BISKAS, NICK 3186387 1340528 Irrigation -- -- — -- 52-R UNITED WATER & SANITATION DIST 3199397 1355113 Irrigation 93 -- - 51-R SMITS MARTIN & CECILIA 3199423 1355115 Irrigation 91 -- -- — 50-R SMITS MARTIN & CECILIA 3199397 1355113 Irrigation 90 -- -• -- — 20461 -T -R TITCHENELLSR, JAMES E. 3192785 1359150 Irrigation 29 -- -- -• 20461-T MCMILLEN F DEE 3192749 1359151 Irrigation 30 •- -- •- -- 13671 -F -R RED TIERRA EQUITIES. L.L.C. (LEMBKE, ROBERT) 3196151 1351821 Irrigation 63 •- -- -- -- 13660-R CENTRAL COLORADO WATER CONSERVANCY DI 3191567 1347134 Irrigation -• — -• -• -• 13640-F RED TIERRA EQUITIES. L.L.C. (LEMBKE, ROBERT) 3194891 1351768 Irrigation 63 — — -- 10989-R WIEDEMAN, TERRY 3192913 1345820 Irrigation 96 — -- -- •- 4460-R PEVONKA JAMES E & ROSALIE R 3191426 1356355 Irrigation -• 34 4678 -• -- 20461-R HODGSON, ALBERT 3192754 1359074 Irrigation -- 30 4681 -• - 7643-F MICHEL, REUBEN 3192770 1357687 Irrigation 27 25 4687 -• -• 15499-F BERNHARDT, JACOB 3187683 1359814 Irrigation 35 35 4705 250 -- 14042-R FRANK, JANICE 3186685 1346496 Irrigation 60 -- •- 900 — 54-WCB HANSEN, CASTOR 3189633 1346469 Irrigation 60 60 4703 900 - 8818-F HS LAND & CATTLE LLC 3191462 1353726 Irrigation 63 60 4684 1119 -- -• 8302-R KAMMERZELL, GENE 3190651 1361021 Irrigation 48 47 4662 1800 12 4697 20461 -R -R HODGSON, LEE 3192794 1359536 Irrigation 32 27 4684 450 10 4701 13701-F BERNHARDT, HERBERT B 3187341 1355674 Irrigation 35 — -- -- 15 4701 23881-F BERNHARDT,1 3189510 1359836 Irrigation 39 38 4676 1350 11 4702 739 -R -R FRONT RANGE LAND & LIVESTOCK 3192086 1357876 Irrigation 27 26 4686 525 8.5 4703 14523 -R -R BETZ CLIFFORD H & TROY L 3188578 1357434 Irrigation 40 38 4673 1200 7 4704 591-WCB RYAN, MARY 3191426 1356355 Irrigation 34 34 4678 1000 7 4705 739-R FRONT RANGE LAND & LIVESTOCK 3192770 1357687 Irrigation 30 25 4687 -- 7 4705 15094-R MICHEL, REUBEN 3192770 1357687 Irrigation 27 25 4687 -- 7 4705 848-WCB MICHOL, REUBEN 3192770 1357687 Irrigation 30 25 4687 1000 7 4705 13042 -R -R WEBER, WAYNE 3201122 1354591 Irrigation 82 -- - 1400 43 4706 14523 -R -R EHRLICH FEEDLOT INC 3188430 1357278 Irrigation 40 34 4678 1200 6 4706 14523-R PHELPS INVESTMENT CO 3188768 1357661 Irrigation 40 -- -- 1200 6 4706 62-WCB HANSEN & PURSE 3179713 1347320 Irrigation 62 61 4670 1200 24 4707 McGrane Water Engineering, LLC 1669 Apple Valley Rd. • Lyons, CO 80540 • Phone: (303) 917-1247; email: den11is@mcgranewwater.com SVRC Groundwater Evaluation January 2024 Page 22 of 58 Table Al — SEO Well Data Used for II fdrololc Analysis (3 of 4 Permit Number Applicant Name COSPN_ X r COSPN Y_ Well Use Well Depth (ft bgs) Depth to Bedrock (ft bgs) Bedrock Elev. (ft bgs) Yield (gpm) SWL (ft bgs) SWL Elev. 10682-R CULLOR, RACHEL F 3189000 1341842 Irrigation 97 -- — -• 22 4746 10682 -R -R CULLOR, RACHEL F 3189000 1341842 Irrigation 92 •- -- 1000 22 4746 10747-R PTASNIK MICHAELJ &JOY W 3183718 1344593 Irrigation 68 -- -- 1200 20 4747 10746-R PTASNIK MICHAEL! &JOY W 3183718 1344593 Irrigation 65 -- — 1300 20 4747 13420 -R -R WESTERN EQUIPMENT &TRUCK INC 3189829 1338650 Irrigation 89 89 4688 1200 27 4750 13421 -R -R WESTERN EQUIPMENT & TRUCK INC 3190810 1338601 Irrigation 72 71 4710 935 30 4751 433-WCB LINDEN, CARL 3190309 1343174 Irrigation 97 -• -- 850 18 4751 20079 -S -R FRANK, VIOLA 3194094 1342405 Irrigation 91 89 4684 1100 21 4752 1747-R ASCHENBRENNER WILLIAM & PATRICIA J PAUL 3190309 1343174 Irrigation 98 -- -- 16 4753 11024-R MARTINDALE JOHN A & DELORES 0 3187710 1339187 Irrigation 60 -- 15 4759 7026-R BRIGGS. CHARLIE 3186407 1337899 Irrigation -- — •- •- 6371-R BESKAS NG TRUST 3186837 1338558 Irrigation -- -• -- -- -- .. 13626-R PTASNIK, MICHAELJ 3183739 1341958 Irrigation 60 •• -- -- 11494-R PTASNIK MICHAEL &JOY W 3182404 1342014 Irrigation _ 60 -- -- •- -- •• 11493-R OSTER, CHRIS C 3182404 1342014 Irrigation 60 -- -- -- -- 11418-R MONFORT FEED LOTS INC 3197886 1363026 Irrigation 26 -- •• 600 5 4693 272-R SHABLE, ALVA L 3192446 1364493 Irrigation 42 -- — 1200 19 4697 250-R AGGREGATOR LLC 3195071 1364449 Irrigation 42 -- 2500 13 4697 11419 -R -R FIVE RIVERS RANCH CATTLE FEEDING LLC 3199442 1362465 Irrigation 61 — 143 28 4699 13272 -R -R FIVE RIVERS RANCH CATTLE FEEDING LLC 3202383 1357245 Irrigation 70 69 4673 800 42 4700 12065-R KAMMERZELLANNA&GEO 3189214 1365679 Irrigation 42 -• 1000 9 4702 12740 -R -R ECKHARDT FARMS INC 3206775 1356221 Irrigation 104 102 4633 1250 33 4702 8895-F MONFORT FEED LOTS INC 3200648 1361742 irrigation 65 — -- 600 26 4704 8577 -R -R WESTERN EQUIPMENT&TRUCK INC 3204561 1357449 Irrigation 74 72.5 4668 900 36 4705 13437-R MONFORT FEED LOTS INC 3201979 1360439 Irrigation 63 -- 1350 22 4708 13427-R FIVE RIVERS RANCH CATTLE FEEDING LLC 3199287 1359070 Irrigation 65 -- •- 1000 22 4710 13438-R FIVE RIVERS RANCH CATTLE FEEDING LLC 3201325 1359788 Irrigation 60 -- 1350 22 4711 2526 -F -R GRAHAM, DOUGLAS A 3207755 1352514 Irrigation 110 104 4631 673 23 4712 11588-R MOSIER, KATHRYN 3208230 1351753 Irrigation 83 -- -- 1200 22 4712 12740-R ECKHARDT LILLIE MRS 3206775 1356221 Irrigation 73 — -- 700 22 4713 19923-R NESOMALBERT&ANNE 3206092 1355231 Irrigation 72 -- -- 750 25 4713 13118-F GILCREST TOWN OF 3201726 1347053 Irrigation 90 -- -• 35 4714 620 -R -R FRITZLER REAL ESTATE LLC 3206115 1352620 Irrigation 99 99 4638 1200 23 4714 634-WCB BERNHARDT, JACOB 3187483 1360432 Irrigation 35 36 4701 250 19 4718 248-R KAMMERZELLGEORGE&ANNA 3189881 1363083 Irrigation 42 -• -- -- 10 4720 10943-F SCHAEFER CARL & VENICE 3203478 1348579 Irrigation 94 — -- 800 21 4721 10482-R SCHWINDT, RONNIE 3206125 1351300 Irrigation 95 99 4639 900 16 4722 14050-R GILCREST RESERVOIR COMPANY 3179737 1344679 Irrigation 60 - — 20 4724 16163-F NELSON, THYRA 3200007 1345496 Irrigation 98 97 4658 990 30 4725 13056-R HUNT DAVID W & KAYLEEN J 3202205 1344588 Irrigation 54 — -• -• 30 4728 592-WCB NELSON, HANS 3204855 1345971 Irrigation 51 -- 900 22 4731 12938-R HUNT, DAVID W. 3206147 1348654 Irrigation 34 -- 450 8 4735 11150-F FRITZLER. JACOB 3204078 1346757 Irrigation 81 - -• 1000 13 4736 10449-R EHRLICH FEED LOTS INC 3184269 1360036 Irrigation 41 35 4715 280 13 4737 664 -R -R HUNT, DAVID W. 3199419 1343864 Irrigation 94 94 4667 900 22 4739 82 -R -R BERNHARDT, DAIRY 3184310 1359696 Irrigation 37 36 4717 500 13 4740 44472-F GILCRESTRESERVOIRCO 3179839 1342742 Irrigation 43 42 4708 900 9 4741 11493 -R -R PTASNIK MICHAELJ &JOY W 3182515 1341340 Irrigation 70 70 4702 900 30 4742 4209-F PTASNIK MICHAELJ &JOY 3181066 1343358 Irrigation 52 - -- 600 23 4742 12936-R HUNT. DAVID W. 3205487 1346644 Irrigation 32 -• -- 350 8 4743 14043-R PTASNIK MICHAELJ &JOY 3181066 1343358 Irrigation 60 -- -- •- 20 4745 664-R WATERMAN JULIUS & ZOLMAN E BROWN 3198242 1343236 Irrigation 54 — -- •• 15 4747 19468-R NELSON HANS B & ERNA M C & HANS B 3203711 1344041 Irrigation 66 66 4700 650 17 4749 6373-R MARTINDALE, DELORES 0 3186397 1339207 Irrigation 90 90 4684 1119 25 4749 210-R WPDSTORAGELLC 3195602 1340586 Irrigation 70 70 4698 1000 18 4750 6371 -R -R MARTINDALE, DELORES 0 3186837 1338558 Irrigation 54 48 4730 650 24 4754 6372-R MARTINDALE, DELORES 0 3186397 1339207 Irrigation 55 55 4719 915 20 4754 14541-RF PTASNIK MICHAEL &JOY W 3183061 1340008 Irrigation 59 58 4717 950 20 4755 7025-R BRIGGS. CHARLIE 3186407 1337899 Irrigation 73 — -- 800 17 4760 1504 -R -R HUNT, DAVID W. 3189838 1334656 Irrigation 50 48 4737 700 25 4760 12674 -R -R MCGLOTHLIN, MARGARET 3189070 1336624 Irrigation 56 56 4723 1100 17 4762 11158-F BROWN, ZOLMAN E 3199603 1340635 Irrigation 48 •- -- 400 10 4768 12564 -R -R TARIN, JOSE C 3195745 1338908 Irrigation 52 51 4723 150 5 4769 1501-R COMING, IONE 3191739 1335385 Irrigation 49 -- — 16 4770 McGrane Water Engineering, LLC 1669 Apple Valley Rd. • Lyons, CO 80540 • Phone: (303) 917-1247; email: derulis@mcgranenwater.com SVRC Groundwater Evaluation January 2024 Page 23 of 58 Table Al — SEO Well Data Used for llyd rolo is Analysis {4 of 4 Permit Number Applicant Name COSPN_ X COSPN Y _ Well Use Well Depth (ft bgs) (Depth to Bedrock (ft bgs) Bedrock Elev. (ft bgs) Yield (gpm) SWL (ft bgs) SWL Elev. 82-R BERNHARDT, BEN 3184945 1357668 Irrigation 40 -- -- 1500 10 4775 12053-R HUNT, DAVID V 3195651 1336730 Irrigation 47 - -- 900 4 4778 12055-R HUNT, DAVID W. 3195651 1336730 Irrigation 57 - - 1000 4 4778 12565-R TARIN, JOSE C 3197146 1338685 Irrigation 10 - 700 2 4779 12054-R HUNT, DAVID W 3196972 1336732 Irrigation 47 -- -- 400 4 4784 63802-MH NOBLE ENERGY INC 3187423 1355160 Monitoring 15 •• - - -- 63296-MH 1-2 CONTRACTING CO (LEONE, CHRIS) 3189653 1346609 Monitoring 65 •• -- -• -- •• 63185-MH NOBLE ENERGY INC 3187448 1355141 Monitoring 18 -- -- -• •• •- 63178-MH PDC ENERGY INC (OLSON, KAREN) 3185519 1354639 Monitoring 11 - •• •• -- - 63110-MH PDC ENERGY INC (OLSON, KAREN) 3186422 1355068 Monitoring 11 •• -• -• - - 62197-MH PDC ENERGY INC (OLSON, KAREN) 3186447 1353760 Monitoring 5 •- - -- •- - 22510-MH NORTHERN COLO WATER CONSERVANCY DIS 3192864 1349786 Monitoring 34 - - -• •- -• 325211 RED TIERRA EQUITIES LLC 3194845 1351884 Monitoring 47 - -- -• •• 325206 RED TIERRA EQUITIES LLC 3194165 1354234 Monitoring 52 -• -• -• -- - 325205 RED TIERRA EQUITIES LLC 3192973 1352114 Monitoring 53 • • -• - - -- 324583 MONARCH MOUNTAIN MINERALS AND AGG 3187210 1346548 Monitoring 55 - -- -- •- -- 324582 MONARCH MOUNTAIN MINERALS AND AGG 3191512 1350298 Monitoring 60 - •• -- 324581 MONARCH MOUNTAIN MINERALS AND AGG 3189484 1348467 Monitoring 60 •• •• - - - 324580 MONARCH MOUNTAIN MINERALS AND AGG 3187792 1350076 Monitoring 60 - -- -- - 324579 MONARCH MOUNTAIN MINERALS AND AGG 3191641 1352476 Monitoring 60 -- - - •• •• 324578 MONARCH MOUNTAIN MINERALS AND AGG 3190150 1355025 Monitoring 40 -- -• 285471 GILCREST RESERVOIR COMPANY 3181150 1345896 Monitoring 41 •• -• -- - -- 325210 RED TIERRA EQUITIES LLC 3193448 1349270 Monitoring 51 - -- -• •• •• 325208 RED TIERRA EQUITIES LLC 3197470 1351056 Monitoring 52 - -• •• -- •• 325207 RED TIERRA EQUITIES LLC 3197433 1353254 Monitoring 52 •- -• - 261609 PRIMA OIL & GAS 3189687 1361068 Monitoring 23 •• -- -- - -- 163692 CENTRAL COLO WTR CONSERVANCY DIST 3193509 1346459 Monitoring - -- -- 324577 MONARCH MOUNTAIN MINERALS AND AGG 3191921 1355495 Monitoring 50 40 4686 •• •- •• 320417 LAFARGEHOLCIM /AGGREGATE INDUSTRIES (D 3191995 1361442 Monitoring 30 •- -- - 15 4701 260892 PRIMA OIL & GAS 3189701 1360983 Monitoring 23 -- - -• 9 4703 260893 PRIMA OIL & GAS 3189726 1360988 Monitoring 24 - - •• 8 4704 261610 PRIMA OIL & GAS 3189603 1360862 Monitoring 23 _ - -- •• 8.5 4704 260775 PRIMA OIL & GAS 3189675 1360913 Monitorinj 26 -- -- -- 5 4708 42858-MH TPI PETROLEUM INC 3194146 1352425 Monitoring 30 - -- •• 21 4724 19084-MH NORTH FRONT RNG WTR QUAL PLNG ASSOC 3191567 1347134 Monitoring 35 -- -- 19 4740 61795-MH GREAT WESTERN OPERATING CO LLC 3187825 1361697 Monitoring 24 -- - -- 38036-MH HALL-IRWIN, CONSTRUCTION 3184917 1360404 Monitoring 19 -- -- -- 38034-MN HALL-IRWIN, CONST 3183624 1357678 Monitoring 19 -• •• •• - 316916 UNITED WATER AND SANITATION DISTRICT 3179684 1344940 Monitoring 43 57 4687 -- -- -- 316920 UNITED WATER AND SANITATION DISTRICT 3179766 1343608 Monitoring 46 45 4701 -- -• 316918 UNITED WATER AND SANITATION DISTRICT 3179797 1343604 Monitoring 45 44 4703 •• -- 316917 UNITED WATER AND SANITATION DISTRICT 3179633 1344936 Monitoring 40 40 4703 - -• •• 316921 UNITED WATER AND SANITATION DISTRICT 3178855 1344919 Monitoring 37 37 4706 -- •• •- 316926 UNITED WATER AND SANITATION DISTRICT 3178636 1345679 Monitoring 33 33 4707 - - -- 316925 UNITED WATER AND SANITATION DISTRICT 3178644 1345631 Monitoring 33 33 4708 - -- -- 64179-DW FISCHER CONSTRUCTION 3179874 1344856 Monitoring 37 - 4750 -• 6 4744 285473 GILCREST RESERVOIR COMPANY 3180722 1343484 Monitoring 31 -- - -- 10 4745 11685 -R -R HILL V 3194180 1349792 Municipal - - 2005102 -AB BUYS & ASSOCIATES 3189513 1360946 Other -- - - •- - 2005090 -AB BUYS & ASSOCIATES 3189332 1360864 Other 2005103 -AR BUYS &ASSOCIATES 3189593 1360952 Other •• - - -- 2005100-AR BUYS & ASSOCIATES 3189737 1361027 Other -- -- - •• •• -- 2005099-AB BUYS &ASSOCIATES 3189692 1361064 Other -• •- -- -- -- - 2005098 -AB BUYS & ASSOCIATES 3189705 1361046 Other •• -• - •- -- -• 2005097 -AB BUYS & ASSOCIATES 3189764 1361003 Other -- .- -- •- -- -• 2005096 -AB BUYS & ASSOCIATES 3189595 1361020 Other -• •• -- - -- .. 2005095 -AB BUYS & ASSOCIATES 3189593 1360947 Other -- - -- - - -• 2005094 -AB BUYS & ASSOCIATES 3189736 1360908 Other -- - •• •- -• 2005093 -AR BUYS & ASSOCIATES 3189659 1360853 Other -- -- •• •- -. -- 2005092-AR BUYS & ASSOCIATES 3189649 1360995 Other -- -- -- - -• -• 2005091 -AB BUYS & ASSOCIATES 3189575 1360917 Other - - -- -• -• -- 63753-F CENTRAL COLORADO WATER CONSERVANCY Dl 3197992 1351889 Other - 72 -- •- 1250 34 4719 2005101 -AB BUYS & ASSOCIATES 3189554 1364066 Other - -- . • -- 538-WCB ROOT, CHARLES 3191444 1355035 Stock 31 30 4697 5 18 4709 3740 OWENS TOMM & DEBORAH 3196800 1355090 Stock 61 -• -- -- 26 4716 Count 324 283 118 167 204 -- Mon 5 19 - 5 2 -- Max 200 104 -• 2500 43 -- Avenge 58 56 •- 693 21 -- McGrane Water Engineering, LLC 1669 Apple Valley Rd. • Lyons, CO 80540 • Phone: (303) 917-1247; email: denms@mcgranewater.com SVRC Groundwater Evaluation January 2024 Page 24 of 58 Table A2- SVRC Monitorin Well Water Levels Well Designation Existing Monitor Well JT MW -1 JT MW -2 JT MW -3 Description Soulhwest Corner Notthwesl Corner Northeast Corner Southeast Corner Top of Wel Elevation (6) '765.11 4754/7 4757.78 4783.84 Ground Elevation (A) 4782.38 475257 4755.58 4781.50 Date Depth to Groundwater from Top of NM (at Depth to Groundwater from Ground MI Elewtlon of Groundwater (5) Depth to Groundwater from Top of Well (hl Depth to Groundwater from Ground (5) Elewllon of Groundwater (5) Depth to Groundwater from Top of Well Olt Depth to Groundwater from Ground (f) Elewtion of Groundwater (f) Depth to Groundwater from Top of Well (5) Depot to Groundwater from Ground tai Elewuon of Groundwater (t) October 26.2023 18.17 13.44 4748.94 November 17. 2023 17,25 14.52 4747.88 17.00 14.80 4737,77 17,98 15.74 4739.62 1600 13.88 4747.64 December 22, 2023 18.63 15.90 4748.49 18.10 15.90 4736.87 18.83 18.81 4738 85 17.25 15,11 4746.39 January 20, 2024 19.54 16.81 4745.57 1892 18.72 4735.85 20.00 17.78 4737.78 18.25 18.11 474539 Note: December 22, 2023 water levels used in Pre -pit Run model calibration Table A3- Section 20 Monitoring Well Water Levels l From J&T Consu I t i Ei4r Section 20 Groundwater Monitoring Program* _ Monitoring Well Date Measured MW -1 M MW -2 MW -3 25 MW -4 23 MW -S -- MW -6 MW -7 Drilling estimate 11/4/2021 25 24 14 27 12/28/2021 26.4 25.5 21.1 28.4 30.2 22.2 28,8 3/16/2022 - 26.6 25.9 21.4 28.3 30.2 22 28.6 5/23/2022 6/22/2022 26.7 26.7 25.7 24.4 - 20.6 19.9 26.2 24.1 28 2 27.6 _ 20 18.7 27.8 26.3 7/15/2022 28.6 24.4 18.7 24.5 - 27.2 18.5 - 26 Date Measured - MW -1 MW -2 MW -3 MW -4 MW -S MW -6 MW -7 12/28/2021 4,725.90 4,717.50 4,723.70 4,728.60 4,733.90 _ 4735.3 4,726.82 3/16/2022 4,725.70 4,717.10 4,723.40 4,724.20 4,728.70 4,730.80 4,733.90 4735.5 4737.5 4,727.02 4,727.82 _ 5/23/2022 _ 4,725.60 4,717.30 4,735.90 6/22/2022 4,725.60 4,718.60 4,724,90 4,732.90 4.736.50 4738.8 4,729.32 7/15/2022 4.723.70 4,718.60 4,726.10 4,732.50 4,736.90 4739 4,729,62 Niles: 'Ail rurrtsttrrn)rufs me jrent /bile prm'idctl0t Final krperf 1:0222 • Nterr 1 39. pa "DM:etmlber 28, 2023 eater Ictr s aced ill Pre -pit Run nfudcl calibald ion Tables A4 - A8 in Text McGrane Water Engineering, LLC 1669 Apple Valley Rd. • Lyons, CO 80540 • Phone: (303) 917-1247; email: demiis@mcgranewater.com SVRC Groundwater Evaluation January 2024 Page 25 of 58 APPENDIX A - FIGURES McGi ne Water Engineering, LLC 1669 Apple Valley Rd. • Lyons, CO 80540 • Phone: (303) 917-1247; email: demiis@mcgranewater.com Page 26 of 58 FIGURE Ala SEO Well Data Used for Hydrogeologic Analyses Weld County, Colorado Sources: 1) JT Consulting Pit outlines; 2) Barkmann, 2014, Table 2017TM-1; Googly Earth Imagery (2021); USGS DEM lam; CDSS Well Datataase Map Legend DWR Wells - by use type Western cam! ■ Domestic/Stock 2 Eastern Slough" n Irrigation • Dewatering/Other/NA ' \, Western Slough' r _1 Study Area Model Area "Standing water per Google Earth Image June, 2021 © :limed Ses iqp?-(iPit I Lined Moharth:Pit ''1SeDtiofi kQrPit NIw Date: January 2024 Datum/Projection: NAD83/Colorado State Plane North, feet 1 ri ijJSJ `''�:� rev Page 27 of 58 FIGURE Al b SEO Well Data Used for Hydrogeologic Analyses Weld County, Colorado Sources: 1) 1T Consulting Pit outlines; 2) Barkmann, 2014, Table 2017TM-1; Gaoglc Earth Imagery (2021); USGS DEM 10m; COSS Well Database Map Legend DWR Wells - by use type e Domestic/Stock ▪ Irrigation • Municipal • Dewatering/Other/NA =I5Sudy ►rea Model Area "Standing water per Googie Earth Image June, 2021 00 1.000' . fax) Feet: Western Canal 2i- Eastern Slough* 1= Lined Section 20'Pit l Section 20 Pit MW Date: January 2024 Datum/Projection: NAD83/Colorado State Plane North, feet �yuxX uj ,u Page 28 of 58 94863-A. FIGURE Al r - r'1746f; R ;433=WCB 1747-R 43419 -R -R 657 P 4468 -A13418 -R -R. 13420-R,R' 1.3421-R'R �•_13I1D-KrK SEC) Well Data Used for Hydrogeologic Analyses Weld County, Colorado Sources: 1) JT Consulting Pit outlines; 2) 0arkmann, 7.0]4, Table 20171M.1; Googly Earth Imagery (7021); USGS DEM loin; CUSS Well Database 4N 66W 4-WCB Map Legend DWR Wells - by use type • Domestic/Stock • Irrigation Dewatering/Other/NA _I Study Area 0 Model Area *Standing water per Google Earth Image June, 2021 N/ r 20031-k ::.20631-S ' •20017 1589 -R -R 0079-T 1590 -R -R Lined Monarch Pit. © Sweet Valley Reservoir Complex MW Date: January 2074 Datum/Projection: NADS3/Colorado State Plane North, feel if Page 29 of 58 4N 67W 4N 66W - 14041.Ft ,ar27008o `21288 A'-6,-VV'GB. ' � g30072r 29921. 723-WCB 114_93 -R -R 17584-A • SEO Well Data Used for Hydrogeologic Analyses Weld County, Colorado Sources: 1) JT Consulting Pit outlines; 2) Darkmann, 7014, Table 2017TM-1; Google Earth Imagery (2021); USGS OEM lOrn; CUSS Well Database FIGURE Aid 4- 98 ;��:� .lei i' Z 4 9924 -R -R, 485466A 33-WCBIP1747-R • Map Legend DWR Wells by use type • Domestic/Stock ti Irrigation • Dewatering/Other/NA r _1 Study Area 1 Model Area *Standing water per Google Earth Image June, 2021 --- Western Canal Western Slough.. Lined Sweet Valley Reservoir Complex Pit Lined Monarch Pit Sweet Valley Reservoir Complex MW 0 Well WL-M-001 (ref. 2) Date: January 2024 Datum/Projection: Nr1DA3/Colorado State Plane North, feet Page 30 of 58 FIGURE A2 Surficial Geology and Well Depth Weld County, Colorado Sources: IT Consulting Pit outlines; Google Earth Imagery (2021); USGS DEM 10m; Milliken Quadrangle Geologic Map OF -18.02, Palkovic et al. (2018) Map Legend I= Model Area r j Study Area DWR Wells - Well Depth (ft) A < 25' A 25' to 50' A 50' to 75' L 75' to 100' ♦ > 100' Western Canal Eastern Slough* Western Slough* Lined Sweet Valley Reservoir Complex Pit II -I Lined Section 20 Pit Lined Monarch Pit Date: January 2024 Datum/Projection: NAD83/Colorado State Plane North, feet Gl LCREST 80 X90 ■ 0 0.25 0.5 Geologic Unit (modified from: OF -18-02) O Disturbed L J Alluvium Ground (dg) Three (Qa3) Artificial Fill Gravel deposit One (Qgi) Gravel -. deposit Two (Q92) (af) Alluvium (Qa) Alluvium - One (Qa1) -i Alluvium Two (Qa2) Eolian sediment (Qe) Conglomerat (OgMiC) Fox Hills SS (Kfh) *Standing water per Google Earth Image June, 2021 ,3, f L/�.J.r� ,Pi A w' 'rte Lr 'y4r.04 Page 31 of 58 4N 67W •c.•d. 442 3 4702 FIGURE A3 Bedrock Elevation Weld County, Colorado Sources: JT Consulting Pit outlines; Google Earth Imagery (2021); USGS DEM lam; COSS Well Database; Robson (2000) 4N 66W 4737 i may,! •27. r •*t 6 ij r • •a Cd 03 r.., ! l ' Map Legend CI Study Area Q Model Area o ❑WR Well with Bedrock Elevation Data — Western Canal 420- Eastem Slough* ':•'Western Slough* Lined Sweet Valley Reservoir Complex Pit 0 Lined Section 20 Pit Lined Monarch Pit Bedrock Elevation '\ Contour (revised from Robson [20001) 'Standing water per Google Earth Ima•e June, 2021 Date: January 2024 Datum/Projection: NAD83/Colorado State Plane North, feet Pa e 32 of 58 FIGURE A4a Year 2000 Water Table Weld County, Colorado Sources: (1) Civil Resources LLC, October 14, 2022. Memo to Robert Lembke titled "Modification to Model in Response to DRMS Comments,"; (2) Barkmann and Others, 2014, Colorado Geologic Survey Open File 13-06, Fig. 10; (3) J&T Consulting Monitoring Well Data; Robson, 2000; ESRI World Imagery (2021); USGS DEM 10m Map Legend r _I Study Area Q Model Area Section 20 Pit ID Monitoring Well - Summer 2022 (ref. 1) 0 DWR Well with SWL Data Western Canal ,- Eastern Slough* '� ..• Western Slough* Lined Sweet Valley Stream Point Elevation` Reservoir Complex Pit Meining Monitoring Well ©Lined Section 20Pit - Observed November Lined Monarch Pit 2023 (ref. 3) Date: January 2024 Datum/Projection: NAD83/Colorado State Plane North, feet Water Table Contour (revised from Robson [2000]) interval = 20' 'Standing water per Google Earth Image June. 2021 I 444.1.4,44.•••:,‘ Page 33 of 58 FIGURE A4b Recent Water Table Weld County, Colorado Sources: (1) Civil Resources LLC, October 14, 2022. Memo to Robert Lernbke titled "Modification to Model in Response to DRMS Comments.' ; (2) 8arkmann and Others, 2014, Colorado Geologic Survey Open File 13-06, Fig. 10; (3) J&T Consulting Monitoring Well Data; (4) Barkmann, 2014, Table 2017T1Vt-1 ESRI World Imagery (2021); USGS DEM 10m • 11(4 I 99 4140 r 4759-16 PI - OPP A.- `34 V 03 '! Map Legend r Study Area © Model Area A Stream Point Elevation' Meining MW - Observed November 2023 (ref. 3)' Section 20 Pit MW Observed December 202i* (ref.1) '.0 Well WL=M-o01 (ref, 4) Complex Pit © Lined Section 20 Pit Lined Monarch Pit rn DWR Well with SWL•Data -Western,Canal Z• Eastern Slough' 1 \, Western Slough* Water Table Contour - interval = 10' (ref. 2) CGS (2012) Figure 10 Spring 2012 WT Lined Sweet Valley Reservoir •• Modified contour based on SVRC IN Dashed where inferred (ref. 2) *Standing water per Google Earth lma•e June, 2021 Date: January 2024 Datum/Projection: NAD83/Colorado State Plane North, feet II Page 34 of 58 4N 66W z V 4,634-WCB 4,15499-F 83-R • z FIGURE A5a 248-8 e 633-WCB 06112-VE 27 0 74 pi,tte piVpr. 538-WCB 12461-R • 15656-Ra487-WCB 12462 -R -R ;8818-F a p275938 .23 2159 a 10045-R 10044-R a 21 4,13888-R 12 fIa�asa�e.Q 19924 -R -R 123014 Depth to Groundwater (north) Weld County, Colorado Sources: J7 Consulting Pit outlines; Barkmann, 2014; Google Earth Imagery (2021); USGS DEM 10m; CDSS Well Database Map Legend DWR Wells - by use type • Domestic/Stock a Irrigation +b Dewatering/Other/NA r _1 Study Area Model Area *Standing water per Google Earth Image June, 2O21 I I 925140 ' • 1141148 t2 \ 422-WCB B 12008-R U 5 0664 12006-R 12010 -R -R a p 10475.84,8967-F a 10476-R 67808-F • 225934 0279437 10223-Ra10222-R Western Canal 'a- Eastern Slough* '. • Western Slough* Lined Section 20 Pit i . = Lined Monarch Pit 276183-A R a13426 -R 13427-R'4, 4,67 29924-F a 55663-F 1458-A 29923-F a 55664-F s 279438 • 3740 321654 267998 C 0267997 •52-R 3470-A a 17919-A267 n 50 -R -R to 29 L4 t ■ 39611 941'R 11687•R -R 63753-F a 0 0610 - Feet Depth to Groundwater^ (feet below ground surface) < 5' 5' to 10' 10' to 15' > 15' ^Revised from Barkmann and Others, 2O14, Colorado Geologic Survey Open File 13-O6, Fig. 10 Date: January 2024 Datum/Projection: NAD83/Colorado State Plane North, feet Page 35 of 58 z 13640-F 13671•F -R .1123 267998 0267997 231167 4N 66W •466-WCB 4443-F 52-R 13043-R 63750-F 5-WCB 5819 -R -R fi• 560-WCB 1° 4i 13044 -R -R a 1791.51 -R -R 0207916 13042 -R -R 50 -R -R • e 297336-A 6 -RA 11687 -R -R 63753-F .610-WCB 209 -R259953 -F 63758 -F013959 -R -R 63759-F C •208-R 642-WCB 207AR 12091-F ° n m 12092-F 260982 952 -R -R .24179 •.953 -R -R 59956-F 112681-R • 10988-R•R 8 83754-F 20031-U to 20031-V 20031.8 20031-S 3 3 20031-T m631 -R m632 -R 12791.R -R 9 287311 • 81324 FIGURE A5b Depth to Groundwater (east) Weld County, Colorado Sources: 1T Consulting Pit outlines; Barkmann, 2014; Google Earth Imagery (2021); USGS DEM 10m; CDSS Well Database .630-R 59952-F a 59951-F 75540-F 47534- 0619A 0,623 -R -R 11324-R 14969 -R -R08342-41108 V •407 288867-A >! 213511A '916-Wt8 I.B 656731-F 13118-f [43119 -F -R � 4.838-F .109834 123.0.g844 6441405.-15$311-A Map Legend DWR Wells - by use type • Domestic/Stock s Irrigation Municipal * Dewatering/Other/NA r _I Study Area Q Model Area *Standing water per Google Earth Image June, 2021 Western Canal 2 - Eastern Slough* Q Lined Section 20 Pit •14018 49286 63756-F 199234th 88667 a_ C0 F0ef Depth to Groundwater^ (feet below ground surface) < 5' 5' to 10' 10' to 15' > 15' ^Revised from Barkmann and Others, 2014, Colorado Geologic Survey Open File 13-06, Fig. 10 Date: January 2024 Datum/Projection: NAD83/Colorado State Plane North, feet Ltd tarn u'ur Page 36 of 58 I4N 6 W 4N 66W ML9 NP I ML9 N£ ` 7 m71544 1 ID 1 171 tat 01385A1 1838 59956-F a 12681-R 10958-R•R IS 631•R 4 ° 8 83754•F 48$21 •tlG-WCB ® 04-WCB 20031•U"20031•V 8324 ° 1144.1HCB 27t3Q6•P•R 155183-A ) ¢ O g 8155163 127914-R ® 725-WCB 100864 20031-R 20031-S a >m 75712•F a ®20031 .287311 l'181524 T 9-R 1997 RJR 4 10987-R 1589•R•R ,225�A 1748-R-Ra 083747 F 75614 ra n041 -F s646t i ._ al ..;s 433•WCBg1747•R a200794 ii,1590•R-R 02007944 S -R ea10852•Ft R ®00T9 -R 92983-A 78273-F A :81801 64422 17101 78274-F :: a - 2887838 I' e3210.4 111 a a13419 -RA 49498 -Fa a4849 44857 • 11024-R 13416 -R -R 44858.0 . 1 Q 03 13420-R•R n1®5 . / / 13421•-R 4.785714 a12585.R .11919�99 a 443438 a a 3', ^ 8 :77. 188144 e f z / z •250988-A / / / 94883-A 12674 12055-Ra12053•R 12034-R, / ■ -Rat 0371•WCB 0,50989.0 a13715 -RA 184148- ?26•WCB o / / / 58,{8-F a ' -R 38-WCB r • ■ 18 4-A • ` ,27164-A• a 5V1,000 2,000 a 1504 -R -R 4 Feet FIGURE A5c Map Legend DWR Wells - by use type Lined Sweet Valley Depth to Groundwater^ Depth to Groundwater (south) Complex Pit (feet below ground surface) • Domestic/Stock Reservoir ■ Irrigation E _ _ ` Lined Monarch Pit MI < 5' • Dewatering/Other/NA r _I Study Area 5' to 10' 10' to 15' Weld County, Colorado Q Model Area > 15' Sources: *Standing water per Google ^Revised from Barkmann and Others, 2014, Colorado Geologic JT Consulting Pit outlines; Barkmann, 2014; Google Earth Imagery (2021); USGS DEM 10m; CDSS Well Database Earth Image June, 2021 Survey Open File 13-06, Fig. 10 Date: January 2024 Datum/Projection: NAD83/Colorado State Plane North, feet ` ��y ��,,�t IQJ r:' JL'.1`7 1Jl alii.Lir . Page 37of 58 z FIGURE A5d n't404t-R 0.210080 • 21288-A a6i•WCB 300129 299322 al23NWCB 1753321O746 -R 10T4T-R • on A 0266838-A 0184193 4209-F 911494-R O 13 716448 7165-R 13659-R ® OW Q •1366141 11141:424 ;W-W0D _ p5tJ B 433•wc•1747-R 210612 -R -R � w 1T884•A Y a�w s K K a it4795- 1101 •29783$ 0 5001,004 112983 A TWA 84422 17101 76274-F 2,000 Feet Depth to Groundwater (west) Weld County, Colorado Sources: IT Consulting Pit outlines; Barkmann, 2014; Google Earth Imagery (2021); USGS DEM 10m; CDSS Well Database Map Legend DWR Wells - by use type • Domestic/Stock • Irrigation • Dewatering/Other/NA r _1 Study Area Model Area — Western Canal ▪ %,,0 Western Slough* Lined Sweet Valley ▪ Reservoir Complex Pit Lined Monarch Pit Depth to Groundwater^ (feet below ground surface) < 5' 5' to 10' 10' to 15' > 15' *Standing water per Google ^Revised from Barkmann and Others, 2014, Colorado Geologic Earth Image June, 2021 Survey Open File 13-06, Fig. 10 Date: January 2024 Datum/Projection: NAD83/Colorado State Plane North, feet It 61.h;‘••141.O ►+lam Page 38 of 58 4N 67W 39 40 X42 041 44 44 Q 4646 44 O47 FIGURE A6 Aquifer Saturated Thickness Weld County, Colorado Sources: (1) Civil Resources LLC, October 14, 2022. Memo to Robert Lembke titled "Modification to Model in Response to DRMS Comments."; (2) J&T Consulting Monitoring Well Data; ESRI World Imagery (2021); USGS DEM 10m; CDSS Well Databas Robson, 2000; Section 20 MW Final Report (12.02.2022) 49 49 4 0 • (zi. 29 I • .' tl 4N 66W 37 34 +38 • 34.U41 55 55 45 49 46 45 9 :7 • _ .-431of bit 4.1 21 • iP • [} I Cl� [+} GILCREST 28 '14°1 • rs try 22 , a 83 s •l — Western Canal Map Legend © Model Area V Eastern Slough* '\.. Western Slough* Lined Sweet Valley Reservoir Complex Pit Lined Section 20 Pit Lined Monarch Pit O DWR Well^ Meining Monitoring Well — Observed November 2023 (ref. 2) Section 20 Pit Monitoring El Well - Observed December 2021 (ref. 1) Aquifer Saturated Thickness (ft) IN 20' to 30' 30'to40' 40' to 50' IN 50' to 60' 1.60'to86' Date: January 2024 Datum/Projection: NAD83/Colorado State Plane North, feet 4N 67W a FIGURE A7 Well Yield Weld County, Colorado Sources: JT Consulting Pit outlines; Google Earth Imagery (2021); USGS DEM 10m; CDSS Well Database 4N 66W ,203 fay as ): .W.(1?4" ■a If a f Page 39 of 58 03 Map Legend [] Model Area Eastern Slough* A., Western Slough* — Western Canal Lined Sweet Valley Reservoir Complex Pit El Lined Section 20 Pit Lined Monarch Pit DWR with Yield Data^ o Domestic/Stock (<15 gpm) I1 Irrigation (<15 gprn) o Domestic/Stock (15-250 gpm) O Irrigation (15-250 gpm) ■ Irrigation (250-1,000 gpm) • Other/NA (250-1,000 gpm) ▪ Irrigation (>1,000 gpm) • Other/NA (1,000 gpm) Date: January 2024 Datum/Projection: NAD83/Colorado State Plane North, feet CS `icc rJ" rev Sources: IT Consulting Pit outlines; Google Earth Imagery (2021); USGS DEM 10m; CDSS Well Database; SPDSS Transmissivity Contour from SPDSS [tgrid0309] (1,000's gpd/ft) Modeled Transmissivity (1,000's gpd/ft) MM. MEI h0 COQ �y� QQ ,,(§) ,goo .41).9 ,o ha o° ,�ha Boa 1, CStr.1`.rJ 't iV `e LE Sources: JT Consulting Pit outlines; Google Earth Imagery (2021); USGS DEM lam; CDSS Well Database; SPDSS Lined Sweet Valley Reservoir Complex Pit Lined Section 20 Pit JLined Monarch Pit *Stan Page 41 of 58 Pre -Pit Water Table and Calibration Residuals Sources: JT Consulting Pit outlines; Google Earth Imagery (2021); USGS DEM 10m; CDSS Well Database; (2) Barkmann and Others, 2014, Colorado Geologic Survey Open File 13-06, Fi 10 Map Legend r ; Study Area © Model Area Observed vs Modeled Residuals Observed Higher than • Model Observed Lower than Model — Western Canal Eastern Slough* `.. Western Slough* Lined Sweet Valley Reservoir Complex Pit C Lined Section 20 Pit [] Lined Monarch Pit Date: January 2024 Datum/Projection: NAD83/Colorado State Plane North, feet Water Table Contour - interval = 10' (ref. 2) CGS (2012) Figure 10 Spring 2012 WT Modified contour " based on SVRC data n Dashed where inferred (ref. 2) *Standing water per Google Earth lma iD June, 2021 Page 43 of 58 FIGURE All Scenario 1- Change Caused by SVRC Pits Weld County, Colorado Sources: JT Consulting Pit outlines; Google Earth Imagery (2021); USGS DEM 10m I Map Legend °.\.." Western Slough* Eastern Slough* DWR Wells - by use type o Domestic/Stock s Irrigation * Monitoring/Sampling ! Municipal e Dewatering/Other/NA C. Study Area 0 Model Area Lined Sweet Valley Reservoir Complex Pit Change in Water Level Contour" 1 Drawdown Mounding — Western Canal *Standing water per Google Earth Image June, 2021 ^Contour interval 0.5 ft Date: January 2024 Datum/Projection: NAD83/Colorado State Plane North, feet 4N 67W 4N 66W 24 '`:Q ill. ,'rla • Y _ ��h163 r��atir Scenario 1 - SVRC Mitigation to CCWCD Pipeline Weld County, Colorado Sources: JT Consulting Pit outlines; Google Earth Imagery (2021); USGS DEM 10m FIGURE Al2 Page 44 of 58 16 I 1 ' L',a'11 Map Legend Western Slough' �- Eastern Slough* DWR Wells - by use type • Domestic/Stock Ile Irrigation 1b Dewatering/Other/NA Lined Sweet Valley Change in Water Level Reservoir Complex Pit Contour" Drawdown ' Mounding "Standing water per Google Earth Image June, 2021 "Contour interval = 0.5 ft — Western Canal 0 Modeled Dewatering Well Date: January 2024 Datum/Projection: NAD83/Colorado State Plane North, feet Page 45 of 58 4N 67W 4N 66W FIGURE A13 I' • rt 'f1:T l.''1 - - ll .y 11 [I T • Scenario 1- SVRC Mitigation to Drain Weld County, Colorado Sources: JT Consulting Pit outlines; Google Earth Imagery (2021); USGS DEM 10m 3:0,7:17 n:17 XF , '4•05).1.9 irrx'�• •• znrua 1 26 1 A. I Map Legend Western Slough* �r Eastern Slough` DWR Wells - by use type • Domestic/Stock ■ Irrigation • Dewatering/Other/NA r ; Study Area II Model Area Lined Sweet Valley Reservoir Complex Pit *Standing water per Gaogle Earth Image June, 2021 "Contour interval = 0.5 ft Change in Water Level Contour" /NJ Drawdown j Mounding Western Canal 0 Modeled Dewatering Well Exfiltration Drain Date: January 2024 Datum/Projection: NAD83/Colorado State Plane North, feet SVRC Groundwater Evaluation January 2024 Page 46 of 58 APPENDIX B -MODELING IMPACTS CAUSED BY OTHER PITS BACKGROUND In Appendix B, we evaluated four additional pit development scenarios including: • Pit Scenario 2 • Pit Scenario 3 • Pit Scenario 4 • Pit Scenario 5 - — Only Section 20 Pits (Run 2); — Only Monarch Pits (Run 3); - Both Section 20 and Monarch Pits (Run 4); and All Pits (Section 20, Monarch and SVRC) — Run 5. In each scenarios, we simulated pits by assigning pit cells as impermeable "no -flow" cells and then calculated the "change" compared to water levels from the Pre -pit Run. MITIGATION RUNS In the Mitigation Runs, we attempt to minimize the upgradient change by simulating dewatering wells and or infiltration drains upgradient of pits to reduce drawdown. For Scenario 1 (Only SVRC Pit), discussed in Appendix A, we used two dewatering wells. For the Section 20 Pit, the applicant plans to install both drains and wells to mitigate upgradient mounding, and simulate downgradient recharge through a pond located outside the center of the downgradient liner (Civil Resources, 2021 Sheet 6). To date, we are uncertain what Monarch's mitigation plan will entail, so we also simulate exfiltration drains in this analysis. Whether one or the other is used will depend on its cost effectiveness and regulatory approval. We believe that installing downgradient exfiltration drains will be more cost effective and require less maintenance and augmentation challenges than using recharge ponds, which is why we used them in this analysis. For Scenarios 2-5, we evaluated horizontal infiltration drains to alleviate mounding. Water level flow into a drain is controlled by the conductance term (COND) which is a function of the drain area, permeability of the gravel fill around the drain and depth below the water surface. We assume a 1 foot cross-sectional drain surrounded by gravel with a hydraulic conductivity (K) of 400 ft/day. For a 100 foot long model cell, COND = 40,000 ft^2day (400 ft/day x 1 ft x 100 ft). COND is calculated internally by the model using the digitized length of drain across each model cell. We determined the depth of each upgradient drains using trial and error to achieve zero drawdown, and then iteratively "hard wired" that amount as recharge using the Modflow "Recharge" package. Using this approach to simulate exfiltration drains, we were able to spread the water out over a longer stretch than could be achieved through a real drain. We report the predicted drain flows under each scenario which will vary in reality depending on the drain design and site -specific aquifer properties. The modeling results should be refined through additional modeling and cost analyses prior to construction. Pit Scenario 2 — Only Section 20 Pits Figure A14 shows the impact of liners installed in Section 20 Pits under Scenario 2. The model predicts mounding in the range of +1 to + 6.2 feet in approximately 25 wells. Shadowing is McGrane Water Engineering, LLC 1669 Apple Valley Rd. • Lyons, CO 80540 • Phone: (303) 917-1247; email: demus@mcgranewater.com SVRC Groundwater Evaluation January 2024 Page 47 of 58 expected in the range of +1 to + 6.4 feet in approximately 87 wells. We did not tabulate the well owners affected since it is not the purpose of this evaluation. To mitigate upgradient mounding Figure A15 shows a dashed yellow line that represents the upgradient drain and a solid yellow line representing the exfiltration drain along the northern pit boundary. The simulated drain flow is approximately 1467 gpm which reduces water level changes to nearly zero. Pit Scenario 3 — Only Monarch Pits Under Scenario 3 only Monarch Pits are simulated. The change in water levels associated with just the liner (Run 3) show mounding is expected in the range of +1 to + 4.2 feet in approximately 4 wells (See Figure A16). Shadowing is expected in the range of -1 to -3.7 feet in approximately 76 wells. Most impacts can be reduced to below +/- 1 foot if an upgradient drain is installed in front of Cell 1 (elevation 4742 ft) and Cell 3 (elevation 4733 ft), and an exfiltration gallery is installed downgradient to reinfiltrate the groundwater (Figure A17). The simulated combined drain flow is approximately 1016 gpm. Pit Scenario 4 — Section 20 and Monarch Pits Under Scenario 4 both Section 20 Monarch Pits are simulated. Mounding is expected in the range of +1 to + 5.9 feet in approximately 27 wells (See Figure A18). Shadowing is expected in the range of -1 to -6.4 feet in approximately 132 wells. Most impacts can be reduced to below +/- 1 foot if upgradient and downgradient drains are installed at both pits (Figure A19). Model results show the infiltration and exfiltration drains will flow approximately 2373 gpm. Pit Scenario 5 — All Pits (Section 20, Monarch and SVRC) Under Scenario 5 only Monarch Pits are simulated together. The change in water levels associated with just the liners (Run 5), shows mounding in the range of +1 to + 5.9 feet in approximately 27 upgradient wells (Figure A20). Shadowing is expected in the range of -1 to -8.7 feet in approximately 133 downgradient wells. Most impacts can be reduced to below +/- 1 foot if upgradient and downgradient infiltration and exfiltration drains are installed at both the Section 20 and Monarch pits. At the SVRC, we simulated two upgradient wells, each pumping 225 gpm (450 gpm total). Using an exfiltration drain (Figure A21), the total drain inflow is approximately 2367 gpm and exfiltration drain outflow is 2817 which includes the amount pumped. In the preferred mitigation run for SVRC, where pumped water is exported off -site into the CCWCD pipeline (Figures A22), the infiltration and exfiltration drain flows are the same (2367 gpm). Both mitigation runs are equally effective at reducing shadowing downgradient which is why the applicant prefers to direct drain flow into the CCWCD drain. Table Blsummarizes all pit impacts in terms of the number of wells with mounding and shadowing over 1 foot, and mitigation run well and drain discharge estimates to alleviate changes in the water table. McGrane Water Engineering, LLC 1669 Apple Valley Rd. • Lyons, CO 80540 • Phone: (303) 917-1247; email: demus@mcgranewater.com SVRC Groundwater Evaluation January 2024 Table Bl - Pit Run Sununu Pit Scenario Run Description Without Mitigation With Upgradient Mitigation ! Downgradlent Mitigation Fig. Number or Welk with Water level Change Well Infiltration Exfiltration Fig. Pumping Gallery (gpm) (gpm) Drain (gpm) Number or Wells with Water level Change Mounding Shadowing >lft >lft Mounding Shadowing >lft >lft 1 Only SVRC All 2 4 Al2 400 na na 0 8 A13 400 na 400 0 0 2 Only Section 20 Pit A14 25 87 A15 na 1467 1467 0 0 3 Only Monarch Pit A16 4 76 A17 na 1016 1016 0 2 4 Section 20 and Monarch Pits A18 27 132 A19 na 2373 2373 0 0 5 Section 20, Monarch and SVRC (All Pits) A20 27 133 A21 450 2367 2817 0 0 A22 450 2367 2367 0 0 Page 48 of 58 McCrane Water Engineering, LLC 1669 Apple Valley Rd. • Lyons, CO 80540 • Phone: (303) 917-1247; email: demiis@mcgranewater.com SVRC Groundwater Evaluation January 2024 Page 49 of 58 APPENDIX B FIGURES B1 - B8 McGrane Water Engineering, LLC 1669 Apple Valley Rd. • Lyons, CO 80540 • Phone: (303) 917-1247; email: dennis@mcgranewater.com Page 50 of 58 FIGURE B1 Scenario 3 - Change Caused by Section 20 Pits Weld County, Colorado Sources: JT Consulting Pit outlines; Google Earth Imagery (2021); USGS DEM 10m Map Legend Western Slough* i 3 Study Area 2- Eastern Slough* D 4Model'Area DWR Wells - by use type CI lined Section 20 Pit Domestic/Stock ■ Irrigation * Monitoring/Sampling Municipal DeWatering/Other/NA 'Standing water per Google Earth Image June, 2021 ^Contour interval i= 0.5 ft Date: January 2024 Datum/Projection: NAD83/Colorado State Plane North, feet Cip Change in Water Level Contour^ DrawdoWil Mounding *— Western Canal Map Lagand "•.. Western Slough{ �- Eastern Slough' DWR Wells - by use type • Domestic/Stock • irrigation * Dewatering/Other/NA ;:A:r1li ILf.i .M 'r;�A�u� Change in Water Level ContourA Drawdown r\_► Mounding -- Western Canal Modeled Drain Exfiltration Drain FIGURE B3 4N 67W 4N 66W Scenario 3 Change Caused By Monarch Pits Weld County, Colorado Sources: 1T Consulting Pit outlines; Google Earth Imagery (2021); USGS DEM 10m Page 52 of 58 Map Legend '�•.: Western Slough* Eastern Slough* DWR Wells - by use type Domestic/Stock • Irrigation * Monitoring/Sampling f Municipal • Dewatering/Other/NA *standing water per Goggle Earth Image June, 2021 ^Contour interval r. 0.5 ft r Study Auea 'Model Area Lined Monarch Pit Change in Water Level Contour Drawdown Mounding Western Canal Date: January 2024 Datum/Projection: NAD83/Colorado State Plane North, feet Page 53 of 58 4N 67W ragt 4123DP 24 I—'1 • • I Y Y 4N 66W 111-1 Liaaiu -r Scenario 3 - Monarch Mitigation to Drains Weld County, Colorado Sources: If Consulting Pit outlines; Google Earth Imagery (2021); USGS DEM 10m FIGURE B4 • r/y} =i7 Lr Ira �•Zriitv:' - 4 r •,:rl Pril•flYi3 ,;: Map Legend +"•�. Western -Slough' 2i- Eastern Slough" DWR Wells - by use type o Domestic/Stock • Irrigation • Dewatering/Other/NA r r Study Area Q Model Area fitted Mdrtarch Pit *Standing water per Google Earth :lfrtage`June, 202i ^Contour interval 0.5 ft Change in Water Level Contour" Drawdown Mounding — Western Canal Modeled Drain Exfiltration Drain Date: January 2024 Datum/Projection: NAD83/Colorado State Plane North, feet Page 54 of 58 4N 67W 4N 66W Scenario 4 - Change Caused by Section 20 and Monarch Pits Weld County, Colorado Sources: ff Consulting Pit outlines; Google Earth Imagery (2021); USGS DEM 10m FIGURE B5 Map Legend Western Slough" r Study Area 2,- Eastern Slough' [] Model Area DWR Wells - by use type 0 Lined Section 20 Pit • Domestic/Stock i I Lined Monarch Pit • irrigation * Monitoring/Sampling 4 Municipal • Dewatering/Other/NA "Standing water per Google Earth Image June, 2021 ^Contour interval = 0.5 ft Change in Water Level Contour^ Drawdown " Mounding Western Canal Date: January 2024 Datum/Prof ection: NAD83/Colorado State Plane North, feet VIS Page 55 of 58 4N 67W t�Q tiCLFY... r1I. i ..i' •II FIGURE B6 Scenario 4 - Section 20 and Monarch Pits Mitigation to Drains Weld County, Colorado Sources: JT Consulting Pit outlines; Google Earth Imagery (2021); USGS DEM 10m 4N 66W sgrr,r,3 J ST ROL'r� '- r� t�3 16 •x, Map Legend Western Slough* a- Eastern Slough' DWR Wells - by use type • Domestic/Stock • Irrigation * Dewatering/Other/NA Study Area [I Model Area 0 Lined Section 20 Pit i-.; Lined Monarch Pit "Standing water per Google Earth Image June, 2021 "Contour interval . 0.5 ft Change in Water Level Contour', Drawdown Mounding — Western Canal Modeled Drain Exfiltration Drain Date: January 2024 Datum/Projection: NADS3/Colorado State Plane North, feet Cip kucCsarJa i Pa a 56 of 58 (~ T..J/ 02 y4 1,6 36 FIGURE B7 Scenario 5 - Change Caused by All Pits Weld County, Colorado Sources: JT Consulting Pit outlines; Google Earth Imagery (2021); USGS DEM 10m 3tt '• ; 0 ,,t+LA 27 ,e; A rf I Au 03 Map Legend Western Slough* �r Eastern Slo-ulgh* DWR Wells - by use type s Domestic/Stock ■ Irrigation * Monitoring/Sampling 4, municipal • Dewatering/Other/NA r StUdy Area Model Area Lined Sweet Valley 'Reservoir Complex Pit C Lined Section 20 Pit !Lined Monarch Pit Change in Water Level Contour^ Drawdown Mounding Western Canal `Standing water per Google Earth_ image June 4121 "Contour interval = 0.5 ft Date: January 2024 Datum/Projection: NAD83/Colorado State Plane North, feet kizefarLia Page 57 of 58 FIGURE B8 r Scenario 5 - All Pits with Mitigation to Drains Weld County, Colorado Sources: JT Consulting Pit outlines; Google Earth Imagery (2021); USGS DEM 10m j f�f1f••s ;,4,ryr Map Lagand +\`., Western Slough' 2- Eastern Slough' DWR Wells - by use type • Domestic/Stock • Irrigation * Dewatering/Other/NA Mf �E( ; J 1L i •'i'j'i'1 i t;) ig 20 r = :xrrktuir C f 'f°r+` • Study Area CI Model Area Lined Sweet Valley Reservoir Complex Pit El Lined Section 20 Pit __; Lined Monarch Pit *standing water per Google Earth Image June, 2021 ^Contour interval = 0.5 ft Date: January 2024 Datum/Projection: NAD83/Colorado State Plane North, feet Change in Water Level Contour" Drawdown /NJ Mounding — Western Canal Q Modeled Dewatering Well - Modeled Drain Exfiltration Drain ri _ FIGURE B9 4N 67W jla s _1_ +. mar' • Scenario 5 - All Pits with Mitigation to Drains with SRVC to CWCB Pipeline Weld County, Colorado Sources: JT Consulting Pit outlines; Google Earth Imagery (2021); USGS DEM 10m 4N 66W Page 58 of 58 °'�'�'a Eft 11 26 ycha #r;:u r —mot _.S" I Map Legend 0\, Western Slough' Eastern Slough' DWR Wells - by use type • Domestic/Stock • Irrigation • Dewatering/Other/NA Study Area Model Area Lined Sweet Valley Reservoir Complex Pit [] Lined Section 20 Pit ! Lined Monarch Pit 'Standing water per Google Earth Image June, 2021 ^Contour interval = 0.5 ft Change in Water Level Contour" Drawdown 'N., Mounding -- Western Canal O Modeled Dewatering Well Modeled Drain Exfiltration Drain Date: January 2024 Datum/Projection: NAD83/Colorado State Plane North, feet EXHIBIT H Wildlife Information The project area was surveyed for general wildlife habitat by Ecological Resource Consultants (ERC). The Screening Report for Federal and State Listed Threatened and Endangered Species from ERC is attached which describes the wildlife habitat present on the site and the common species that may be found in the habitat area. ERC has conducted this screening for federal and state listed threatened and endangered species and general wildlife for the approximately 152 -acre survey area. The following provides key items identified as part of this report: 1. Two primary land use class/vegetation cover types exist within the survey area. Habitat within the survey area is characterized as Cultivated Cropland (95%) and Disturbed (5%). Historic land use for agricultural practices has led to degradation of the native vegetation community. 2. Generally, there are features on the survey area and the surrounding area that provide general habitat for local songbirds, raptors, and small to mid -size mammals. However, habitat within the survey area is somewhat degraded and of lower ecological value from a wildlife perspective due to historic and current land use for agriculture, which has restricted overall growth and establishment of vegetation. Per the CPW SAM data, High Priority Habitat was mapped for bald eagle winter range, little brown myotis overall range and mule deer overall range. The survey area has been subject to frequent agricultural practices, is fragmented on all sides and does not contain the necessary habitat to support the listed species. Therefore, impacts to HPH associated with the listed species is not anticipated. 3. Non -raptor birds No non -raptor migratory bird nests were observed within the survey area. However, prior to vegetation removal a nest survey should be completed to ensure that no nests have become established within the survey area and active nests, if any, are not disturbed. Non -eagle Raptors No non -eagle raptor nests were observed and no CPW mapped non -eagle raptor nest protection zones are located within the survey area (CPW 2023a). However, nest activity status can vary seasonally and from year-to-year. Future land use changes may require additional nest surveys (generally between February 1 and September 15 (CPW 2020)) to determine activity status within 1/2 to 1/4 mile of the survey area to ensure compliance with CPW recommendations. Eagles No eagle nests or eagles were observed and no CPW mapped eagle nests are located within the survey area (2023a). However, nest activity status can vary seasonally and from year-to-year. If a nest does become established within a'/z-mile of the survey area or within the survey area, CPW recommends a "No Surface Occupancy" and "No Human Encroachment" within'/4-mile radius of active nest sites from December 1 through July 31. Future land use changes may require an additional nest survey (generally between LIJ&T Consulting, Inc. Central Colorado Water Conservancy District Sweet Valley Pit DRMS 112 Permit Application December 1 and July 31 (CPW 2020) to determine activity status within %-mile of the survey area to ensure compliance with CPW recommendations. 4. No federally listed threatened and endangered species and/or habitat protected under the ESA were identified within the survey area. The survey area is not within designated critical habitat of any federally listed species (USFWS 2008). The vegetation community and features within the survey area were investigated as potential habitat for federally listed species. Any future land use changes will result in No Take on any federal listed species, their habitats, or proposed or designated critical habitat. 5. No State listed threatened or endangered species and/or habitat protected by CPW under Colorado Statute Title 33 were identified within the survey area. The vegetation communities within the survey area were investigated as potential habitat for state listed species. Any future land use changes will have no effect on any state listed species, their habitats, or proposed or designated critical habitat. Attached is ERC's Screening Report for Federal and State Listed Threatened and Endangered Species. IN J&T Consulting, Inc. Central Colorado Water Conservancy District Sweet Valley Pit DRMS 112 Permit Application Eli_ =4 .cal Resource • 225 Union Blvd., Suite 325"' Lakewood, CO 80228"' (303) 679-4820 SCREENING REPORT FOR FEDERAL -STATE LISTED THREATENED AND ENDANGERED SPECIES AND GENERAL WILDLIFE FOR MEINING PROPERTY WELD COUNTY, COLORADO November 22, 2023 Prepared For: J&T Consulting, Inc. 305 Denver Avenue, Suite D Fort Lupton, CO 80621 Office Phone: 303-857-6222 Email: jcyork@j-tconsulting.com J.C. York, P.E. ERC Project #420-2310 A ERC Meining Property Threatened & Endangered Species and General Wildlife Screening Report Screening Report for Federal -State Listed Threatened and Endangered Species and General Wildlife Meining Property Weld County, Colorado November 22, 2023 Contents 1.0 INTRODUCTION 3 2.0 GENERAL SURVEY AREA DESCRIPTION 3 3.0 SCREENING METHODOLOGY 7 4.0 GENERAL WILDLIFE HABITAT (NON -REGULATED) 7 HIGH PRIORITY HABITAT AREAS 8 5.0 MIGRATORY BIRD TREATY ACT 9 6.0 SPECIES PROTECTED UNDER THE ENDANGERED SPECIES ACT OF 1973 10 MONARCH BUTTERFLY (DANAUS PLEXIPPUS) 12 7.0 STATE THREATENED AND ENDANGERED SPECIES 13 BLACK -FOOTED FERRET (MUSTELA NIGRIPES) 14 BURROWING OWL (ATEHENE CUNICULARIA) 15 8.0 SUMMARY 15 9.0 REFERENCES 17 Figures FIGURE 1 -SITE LOCATION AND VICINITY MAP FIGURE 2 -VEGETATION COMMUNITY MAP 2 A ERC 1.0 INTRODUCTION Meining Property Threatened & Endangered Species and General Wildlife Screening Report Ecological Resource Consultants, LLC (ERC) has prepared this report at the request of the property representative, J&T Consulting, Inc. The 152.3 -acre property referred to herein as the Meining Property (survey area) is located west of Gilcrest, Weld County, Colorado. The survey area is under consideration for potential future gravel mining operations which will likely alter a majority of the current survey area landscape; therefore, this report has been prepared to specifically identify potential federal and state listed threatened and endangered species and/or habitat that could exist on or immediately surrounding the survey area. In addition, this report provides a cursory screening of general wildlife use characteristics and existing vegetation community types. This report has been prepared in accordance with the Migratory Bird Treaty Act (MBTA), Endangered Species Act (ESA), Colorado Parks and Wildlife (CPW) Colorado Statute Title 33, the Bald and Golden Eagle Protection Act (BGEPA) and Rule 6.4.8 of the Construction Materials Rules of the Colorado Mined Land Reclamation Board Exhibit H — Wildlife Information. 2.0 GENERAL SURVEY AREA DESCRIPTION The survey area is located approximately 2.31 miles west of the intersection of CO Highway 85 and County Road 42 and west of Gilcrest in the Wildcat Mound -South Platte River watershed (HUC 101900030604). More specifically, the survey area is located in Section 30, Township 4 North, Range 66 West, in Weld County. The approximate center point of survey area is latitude 40.286121° north, longitude -104.815663° west. From the intersection of CO Highway 85 and Weld County Road 42 in Gilcrest, the survey area can be accessed by heading west on Weld County Road 42 for approximately 2.31 miles until reaching the intersection of Weld County Road 42 and CO Highway 60. The survey area is comprised of agricultural fields with the Western Mutual Ditch transecting the survey area from west to east. Two irrigation ponds are also present in the northeast portion of the survey area. Refer to Figure 1 for a location map and a US Geological Survey (USGS) topographic map of the survey area. The survey area is situated within the Great Plains ecoregion (Bailey 1976) at an approximate elevation of 4,760 feet above mean sea level (AMSL). The vicinity of the survey area is comprised of agricultural lands in all directions with private, single-family homes throughout. The landscape within the survey area is predominantly characterized as Cultivated Cropland (NatureServe 2023). Cultivated Cropland The cultivated cropland community is characterized as a non -natural system which includes lands used for the production of annual crops where crop vegetation accounts for greater than 20 percent of the total vegetation and where the land is actively tilled (SWReGAP 2011). This community also includes all land being actively tilled. The cultivated cropland community within the survey comprises relatively flat agricultural fields currently planted with corn (Zea mays), and row crops including winter wheat (Triticum aestivum). The agricultural fields appear to be regularly plowed and/or tilled and subject to flood irrigation practices throughout the growing season. 3 A ERC Disturbed Meining Property Threatened & Endangered Species and General Wildlife Screening Report The Disturbed community includes the Western Mutual Ditch, an irrigation ditch which appears to be used solely for irrigational purposes. Two irrigation ponds which are fed from the Western Mutual Ditch and also appear to be used solely for irrigational purposes. An oil and gas tank in the west central portion of the survey area, and a private single-family home with agricultural outbuildings and corrals in the southeast corner of the survey area. These features consist of barren grounds associated with oil and gas related activities, closely cropped vegetation such as well lawns and landscaping, and urban materials such as buildings and pavement. Tree canopy varies from 0 to 50% (e.g., open to shaded lawns and gardens) (NatureServe 2023). Refer to Photos 1-8 below for typical characteristics within the survey area. Photo 1. View south from the western portion of the survey area. Photo 2. Overview east from the center portion of the survey The survey area is dominated by agricultural fields and subjected to area. The survey area lacks overstory trees and shrubs as it is frequent plowing/tilling. frequently subjected to agricultural practices. Photo 3. View north from the center portion of the survey area. The Western Mutual Ditch can be seen in the foreground. Photo 4. View west from the eastern portion of the survey area. The Western Mutual Ditch can be seen in the right-hand side of the photo. The survey area is dominated by agricultural cropland. 4 A ERC Meining Property Threatened & Endangered Species and General Wildlife Screening Report y !' -- -- 30 . 24 / _ -- -- -- - ��- -- well / i1 r. Legend * Approximate Location r _; Survey Area Boundary (152 ac) --N y yyD- 757 +7Si f o f� f• Jam- • MuruAz o1rcx w f c. r .—• e ��' a' l 4. SS weft, / • (/ i • ° PE'. P4.! �• 1 • 9:je �� Fqe COIT c 1 Greeley 0 L40111...Willi', B cads , pefiver ( 1 .r67 : d • :, Prepared By: A ERC 2820 Wilderness Pt. Ste A Boulder, CO 80301 (303) 879-4820 ERC #: 420-2310 FIGURE 1 LOCATION & TOPOGRAPHIC MAP MEINING PROPERTY WELD COUNTY, COLORADO 0 1.000 2,000 4,000 Feel 5 A ERC Meining Property Threatened & Endangered Species and General Wildlife Screening Report Prepared By: A ERC 2820 Wildemess Pl. Ste A Boulder, CO 80301 (303) 679-4820 ERC #: 420-2310 FIGURE 2 VEGETATION COMMUNITY MAP MEINING PROPERTY WELD COUNTY, COLORADO 0 200 400 800 Feel 6 A ERC Meining Property Threatened & Endangered Species and General Wildlife Screening Report 3.0 SCREENING METHODOLOGY ERC conducted a literature review as part of initial data collection for preparation of this report. ERC reviewed available literature sources including: CPW information and the US Fish and Wildlife Service (USFWS) Federal Register. A field inspection was subsequently conducted on November 6, 2023, to identify and document the presence of natural vegetation communities, general wildlife use and potential for threatened and endangered species/habitat. Upon review of all available resources, including literature and field inspections, ERC provides the following determination for the survey area. 4.0 GENERAL WILDLIFE HABITAT (NON -REGULATED) Wildlife utilizes the general landscape in a multitude of ways and uses a variety of habitats as areas of permanent inhabitance, seasonal inhabitance, breeding grounds, migratory routes, for foraging purposes, or as temporary shelter. Potential wildlife habitat includes the entire survey area. Historic and current land use associated with agricultural practices have restricted and/or degraded the development of any significant natural vegetation communities within a majority the survey area, which limits the overall quality of potential wildlife habitat. As discussed in Section 2.0, two habitat types were observed within the survey area and are characterized as Cultivated Cropland and Disturbed. The Cultivated Cropland (95%) and Disturbed (5%) vegetative communities are dominated by non-native or weedy species and are not typically considered of high ecological value to wildlife; however, agricultural lands can have beneficial values to certain wildlife species. These areas at a minimum are considered "open space" providing limited foraging and hunting grounds, refuge, and limited areas for nesting (Kingery 1998). Such lands often serve as a buffer between natural areas, providing food, cover, nesting, and open -space habitat which allow movement and exchange of plant and animal populations. The vacant agricultural land which is present across the survey area has largely replaced the native shortgrass prairie habitat which would have been present in this region. Herbaceous non-native species and ruderal native species which dominate the vegetation community generally do not provide quality habitat for most wildlife. In general, although agriculture practices have altered the structure, function, community composition, and habitat value of land within a majority of the survey area, some areas do provide a variety of wildlife habitat values in an otherwise agricultural landscape. Within the survey area, significant limitations for wildlife use exist due to land use activities such as regular plowing, tilling and mowing, habitat fragmentation from fences, overgrazing, and general agricultural practices within the survey area. Some other local wildlife species that may use this habitat within the survey area include coyote (Canis latrans), red fox (Vulpes vulpes), rabbit (Lepus sp.), cottontail (Sylvilagus sp.), black tailed prairie dog (Cynomys ludovicianus), white-tailed deer (Odocoileus virginianus), deer mouse (Peromyscus maniculatus), meadow vole (Microtus pennsylvanicus), mourning dove (Zenaida macroura), western meadowlark (Sturnella neglecta), barn owl (Tyto alba), hawks (Buteo sp.), and garter snake (Thamnophis sp.). These types of species may utilize the survey area; however, have not specifically been identified within the survey area. 7 A ERC Meining Property Threatened & Endangered Species and General Wildlife Screening Report • Generally, there are features within the survey area and the surrounding area that provide general habitat for local songbirds, raptors, and small to mid -size mammals; however, the habitat within the survey area is characterized primarily as Cultivated Cropland, which is degraded from a wildlife perspective by historic and current land use practices. HIGH PRIORITY HABITAT AREAS Various development projects within Colorado including residential, energy, or transportation, for example, can impact wildlife and their preferred habitat. Therefore, the CPW has listed recommendations to avoid and minimize impacts to wildlife from land use development in Colorado. Specifically, impacts that may occur in high priority habitat (HPH). HPH is defined as an area containing raptor nests and roost sites, grouse and prairie chicken lek sites and occupied ranges, bat hibernacula, migration corridors, production areas, severe winter ranges, winter concentration areas, winter ranges and waters identified as "Gold Medal" waters (within 500 -feet of an ordinary high-water mark) (COGCC 2021). Where proposed projects cannot avoid impacts to wildlife or their preferred habitat and direct mortality or displacement during construction and habitat conversion occur, or direct impacts occur over time from cumulative functional habitat loss from fragmentation and modified habitat use as density increases, compensatory mitigation for wildlife resources may be required per Rule 1203(a) of the COGCC. Within the survey area, the following mapped HPHs are present: Scientific Namee. Common Name _, MPH Haliaeetus leucocephalus Bald eagle _ Winter range Myotis lucifugus Little brown myotis Overall range Odocoileus hemionus Mule Deer Overall range The bald eagle winter range is defined as those areas where bald eagles have been observed between November 15 and April 1. • Refer to Section 5.0 below for a description of eagles and eagle nests. The little brown myotis overall range is defined as an area which encompasses the observed and predicted range of a population of the little brown myotis. The little brown myotis has a widespread range of habitat and often use human -made structures for resting and maternity sites. They typically roost in caves and mines in the winter, and can be found in trees, artificial structures, bat houses, under rocks and in piles of wood in the summer. Foraging habitat requirements are generalized, occurring primarily over streams and other bodies of water, along the margins of lakes and streams or in woodlands near water. Winter hibernation sites like caves, tunnels and abandoned mines generally have a relatively stable temperature of about 2 to 12 Celsius, as documented by T.H. Kunz and J.D. Reichard in 2010. Maternity colonies commonly are in warm sites in buildings, like attics, bat houses, other human structures, and infrequently, in hollow trees (USFWS 2023). • Within the immediate surroundings of the survey area, several private residential homes exist with landscaped trees. Specifically, in the north -central portion of the survey area and in the southeast corner of the survey area. These structures will not be impacted by the proposed 8 AERc Meining Property Threatened & Endangered Species and General Wildlife Screening Report project. Additionally, directly within the survey area, no artificial structures, caves, mines or other preferred habitat used by the little brown myotis is present. Therefore, impacts to HPH associated with the little brown myotis are not anticipated. Mule deer overall range is defined as the area which encompasses all known seasonal activity areas within the observed range of a mule deer population. Mule deer live throughout Colorado, with the highest densities in the foothills, mountains and western slope in shrubland, riparian woodland, and meadows. Food, cover and water are necessary habitat components for mule deer. • Within the survey area, the land has been subject to agricultural practices including plowing/tilling, which has largely replaced the native shortgrass prairie habitat which would have been present in this region, as noted previously in Section 4.0. Additionally, the site has been fragmented with County Road 42 to the north, Highway 60 to the east, agricultural fields to the south and County Road 25 to the west. During the November 6, 2023 site visit, no mule deer individuals or habitat was present. Therefore, impacts to HPH associated with mule deer are not anticipated. 5.0 MIGRATORY BIRD TREATY ACT Migratory birds are protected under the Migratory Bird Treaty Act (MBTA) (16 U.S.C. 730-712). The MBTA makes it illegal for anyone to take, possess, import, export, transport, sell, purchase barter, or offer for sale, purchase, or barter any migratory bird, or the parts, nests, or eggs of such a bird except under the terms of a valid permit issued pursuant to Federal regulations. In Colorado, all birds except for the European starling (Sturnus vulgaris), house sparrow (Passer domesticus) and rock pigeon (Columba livia) are protected under the MBTA. A total of 523 migratory bird species are known to occur in the Mountain -Prairie Region (USFWS Region 6, Montana, Wyoming, Utah, North Dakota, South Dakota, Nebraska, Kansas and Colorado); 320 of the 523 migratory bird species are known to breed in USFWS Region 6. Migratory birds likely exist within the survey area. The vegetation communities in the survey area provide at the very least, potential nesting and foraging habitat for migratory birds. These migratory birds are protected under the MBTA and killing or possession of these birds (or their parts and nests) is prohibited under the MBTA. The following migratory birds were directly observed and likely utilize the survey area primarily for foraging and limited seasonal nesting. Sclentijk.Name Cpmmvi ;N*m . Anas platyhychos Mallard Melospiza melodia Song sparrow Non -Raptor Migratory Birds Non -raptor migratory birds likely utilize the survey area for nesting on a seasonal basis. These birds, their eggs, and active nests are protected under the MBTA and take or possession of these resources is prohibited. For these non -raptor migratory birds, only the active nest is protected and no buffers or restricted surrounding areas are required. Once the nest becomes inactive, disturbances can occur to the nest and no further agency authorization or coordination is required. Generally, the active nesting 9 A ERC Meining Property Threatened & Endangered Species and General Wildlife Screening Report season for most non -raptor migratory birds in this region of Colorado occurs between April 1 and August 31. • No non -raptor nests were observed within the survey area. However, seasonal MBTA non -raptor bird nesting activity status can vary seasonally and from year to year. Prior to vegetation removal, a nest survey should be conducted no more than 7-10 days prior any future land use changes to ensure that active nests are not disturbed during the nesting season. Non -eagle Raptors Non -eagle raptor nest sites are regulated by the USFWS under the MBTA with local review from the CPW. The CPW has established recommended protective buffer zones and seasonal activity restrictions for a variety of Colorado raptors (CPW 2020). The CPW species -recommended buffer zones are such that if implemented, should assure that the majority of the individual species will continue to occupy the area. CPW considers a nest to be active when it is frequented or occupied by a raptor during the breeding season, or which has been occupied in any of the five previous breeding seasons. Many raptors use alternate nests in various years. Thus, a nest site may be active even if a particular nest is not occupied in a given year. The CPW also maintains Species Activity Mapping (CPW SAM) data which is an online database that lists the known occurrences, status and recorded nest sites of select raptors and other species within the state of Colorado. • No non -eagle raptor nests were observed and no CPW mapped non -eagle raptor nest protection buffer zones are located within the survey area (CPW 2023a). Inactive raptor nest sites have no regulatory restriction and do not require further agency coordination; however, nest activity status can vary seasonally and from year-to-year. Future land use changes may require additional nest surveys (generally between February 1 and September 15 (CPW 2020)) to determine activity status within %2 to1/4 mile of the survey area to ensure compliance with CPW recommendations. Eagles No eagle nest sites are identified on the CPW SAM data within the survey area. No eagles or eagle nests were observed during the site visit. • If an eagle nest site were to become established within a 1/2 -mile of the survey area or within the survey area, CPW recommends a "No Surface Occupancy" beyond that which has historically occurred. CPW also recommends "No Human Encroachment" within %-mile radius and that no human encroachment activities, including construction activities within %-mile radius of active nest sites from December 1 though July 31. Future land use changes may require an additional nest survey (generally between December 1 and July 31 (CPW 2020) to determine activity status within 1/2 -mile of the survey area to ensure compliance with CPW recommendations. 6.0 SPECIES PROTECTED UNDER THE ENDANGERED SPECIES ACT OF 1973 The ESA of 1973 was enacted by the United States to conserve endangered and threatened species and the ecosystems that they depend on. Under the ESA, species may be listed as either "endangered" or "threatened"; both designations are protected by law. The ESA is administered by the USFWS. The USFWS has developed project specific species lists, available online by request, identifying threatened, 10 A iitc Meining Property Threatened & Endangered Species and General Wildlife Screening Report endangered, and proposed species, designated critical habitat (USFWS 2008), and candidate species protected under the ESA that may occur within the boundary of a proposed project and/or may be affected by a proposed project (USFWS 2023) (Project Code: 2024-0014946). The species list for the survey area has identified potential for a total of 9 threatened or endangered species within the survey area. Species Not Present The following federally listed threatened and endangered species are identified to occur within Weld County. However, these species are not known to exist within the specific vicinity of the survey area and/or have specific habitat requirements (i.e., elevation range) that are not common in the vicinity of the survey area. Common Name Scientific Name Status* Determination Gray wolf Canis lupus FE NO TAKE Preble's Meadow Jumping Mouse Zapus hundsonius preblei FT NO TAKE Eastern black rail Laterallus jamaicensis FT NO TAKE *Status key: FT— Federally listed as threatened FE —Federally listed as endangered Water Depletions Species The USFWS under the ESA has determined that water depletions in the South Platte River Basin are considered an adverse effect to the listed species identified below. The survey area is considered to be located within the South Platte River Basin. Common Name Scientific Name Status* Determination Pallid sturgeon Scaphirhycchus albus FE NOT PRESENT, NO TAKE^ Piping plover Charadrius melodus FT NOT PRESENT, NO TAKE ^ Western prairie fringed orchid Platanthera praeclara FT NOT PRESENT, NO TAKE^ Whooping crane Grus Americana FE NOT PRESENT, NO TAKE^ Ute ladies'-tressese Sprianthes diluvialis FT NOT PRESENT, NO TAKE^ *Status key: FT — Federally listed as threatened FE — Federally listed as endangered ^The project is associated with a proposed gravel pit mine and a proposed water supply is not known at this time. Any water related project conducted in the Platte River Basin that has a federal nexus; such as federal funding or a federal permit (i.e., Clean Water Act (CWA) Section 404 Permit), is subject to ESA Section 7 Consultation with the USFWS. The consultation is a mandate for water depletion projects that may affect threatened and endangered species that rely on the South Platte River. • The survey area does not contain the specific habitat characteristics necessary to support the species listed above. These species and/or critical habitat is not present within the survey area (USFWS 2008). It is assumed herein that future land use changes would not be considered a new water depletion. Therefore, the project would result in No Take to these species. 11 A ERC Meining Property Threatened & Endangered Species and General Wildlife Screening Report Species Potentially within Range The following federally listed threatened and endangered species are identified to occur or historically occur within Weld County (USFWS 2023). The survey area is located within the potential known range for these species to occur. Further analysis was conducted to determine if the species or habitat has the potential to exist within the survey area considering site -specific conditions and characteristics. A brief explanation is provided as to the species life cycle, habitat requirements and potential occurrence within the survey area. The survey area is not within designated critical habitat of any federally listed species (USFWS 2008). Common Name Scientific Name Status* , Determination Monarch Butterfly Danaus plexippus C NO TAKE *Status key: C —Candidate listed species MONARCH BUTTERFLY (DANAUS PLEXIPPUS) The monarch butterfly is listed as candidate species under the ESA. Adult monarch butterflies are large and conspicuous, with bright orange wings surrounded by a black border and covered with black veins. The black border has a double row of white spots, present on the upper side of the wings. Adult monarchs are sexually dimorphic, with males having narrower wing venation and scent patches. The bright coloring of a monarch serves as a warning to predators that eating them can be toxic. As a candidate species, the monarch butterfly has no statutory protection under the ESA, however the USFWS encourages cooperative conservation efforts because they are species that may warrant future protection under the ESA (USFWS 2017). • No monarch butterflies or milkweed species were observed within or surrounding the survey area. The survey area historically has been highly modified with agricultural practices. However, future land use changes should consider and describe any planned conservation measures for the monarch butterfly. Conservation measures can include habitat management such as the inclusion of native milkweed plant species in restoration efforts, reducing herbicide and pesticide use within the survey area, and/or creating a conservation easement for habitat protection. Such best management practices will aid in maintaining and/or enhancing the future survival of the monarch butterfly survival. However, these are not regulatory requirements. 12 A ERC Meining Property Threatened & Endangered Species and General Wildlife Screening Report 7.0 STATE THREATENED AND ENDANGERED SPECIES Species identified as state threatened or endangered are protected by the CPW under Colorado Statute Title 33. State regulations prohibit "any person to take, possess, transport, export, process, sell or offer for sale, or ship and for any common or contract carrier to knowingly transport or receive for shipment" any species or subspecies listed as state endangered or threatened. The CPW also has identified State Species of Special Concern, which are species or subspecies of native wildlife that are currently vulnerable in their Colorado range and have the potential to become threatened or endangered. Species of Special Concern are not protected under State regulations but the 'take' of individuals and disturbance of their habitat is strongly discouraged. All state listed species were screened as potential inhabitants of the survey area based on general habitat requirements and CPW Species Profiles (CPW 2023b). ERC evaluated the species listed by CPW as threatened or endangered that could potentially exist within the survey area. All animal species listed above as threatened or endangered by the USFWS are also listed by the CPW as threatened or endangered, respectively, therefore were not duplicated below. Species Not Present The following listed threatened and endangered species are identified to occur within the state (CPW 2023b). However, these species are not known to exist within the specific vicinity of the survey area and/or have specific habitat requirements (i.e., elevation range) that are not common in the vicinity of the survey area (CPW 2023b and USFWS 2023). Common Name Scientific Name Status* Boreal toad Bufo boreas boreas SE Southwestern willow flycatcher Empidonax traillii extimus SE Lesser prairie -chicken Tympanuchus pallidicinctus ST Plains sharp -tailed grouse Tympanuchus phasianellus jamesii SE Arkansas darter Etheostoma cragini ST Bonytail Gila elegans SE Razorback sucker Xyrauchen texanus SE Humpback chub Gila cypha ST Colorado pikeminnow Ptychocheilus lucius ST Greenback cutthroat trout Oncorhynchus clarki stomias ST Rio grande sucker Catostomus plebeius SE Lake chub Couesius plumbeus SE Plains minnow Hybognathus placitus SE Suckermouth minnow Phenacobius mirabilis SE Northern redbelly dace Phoxinus eos SE Southern redbelly dace Phoxinus erythrogaster SE Brassy minnow Hybognathus hankinsoni ST Common shiner Luxilus cornutus ST Gray wolf Canis lupus SE Grizzly bear Ursus arctos SE Lynx Lynx canadensis SE 13 A ERC Meining Property Threatened & Endangered Species and General Wildlife Screening Report Common Name Scientific Name Status* Wolverine Gulo gulo SE Kit fox Vulpes macrotis SE River otter Lontra canadensis ST *Status key: ST —State listed as threatened SE — State listed as endangered • The survey area does not contain the specific habitat characteristics necessary to support the species listed above. These species and/or critical habitat is not present within the survey area. Therefore, any future land use changes will have no effect on the species, their habitats, or proposed or designated critical habitat. Species Potentially within Range The following state listed threatened and endangered species are identified to occur or historically occur within Weld County. The survey area is located within the potential known range for these species. Further analysis was conducted to determine if the species or habitat has the potential to exist on the survey area considering site -specific conditions and characteristics. A brief explanation is provided as to the species life cycle, habitat requirements and potential occurrence within the survey area. Common Name Scientific Name Status* Black -footed ferret Mustela nigripes SE Burrowing owl Athene cunicularia ST *Status key: ST —State listed as threatened SE —State listed as endangered BLACK -FOOTED FERRET (MUSTELA NIGRIPES) The black -footed ferret (BFF) (Mustela nigripes) is a medium-sized mustelid (a member of the weasel family). The BFF is the only ferret species native to the Americas. Its historical range spanned much of western North America's intermountain and prairie grasslands, extending from Canada to Mexico. Historically, BFF habitat coincided with habitats of black -tailed prairie dog (C. ludovicianus), Gunnison's prairie dog (C. gunnisoni), and white-tailed prairie dog (C. leucurus). Prairie dogs make up more than 90% of the BFF's diet. BFFs are limited to open habitat, the same habitat used by prairie dogs: grasslands, steppe, and shrub steppe. It depends largely on prairie dogs: ferrets prey on prairie dogs and utilize their burrows for shelter and denning (Hillman and Clark, 1980). It has been estimated that about 40-60 hectares of prairie dog colony are needed to support one ferret (Belant and Biggins 2008). BFFs once numbered in the tens of thousands, but due to a combination of human -induced threats they were believed to be extinct twice in the 20th century. As of 2015, BFFs have been reintroduced in the wild at 24 sites across 8 states, Canada, and Mexico. • No BFF individuals were observed on or surrounding the survey area. The survey area is located within the overall range of the black -tailed prairie dog; however, no colonies were observed within the survey area. Further, the survey area occurs within the block clearance zone for black -footed 14 A ERC Meining Property Threatened & Endangered Species and General Wildlife Screening Report ferret surveys (USFWS 2009). Any future land use changes within the survey area should have no effect on the continued existence or potential habitat of this species. BURROWING OWL (ATEHENE CUNICULARIA) The burrowing owl (Owl) is listed as a state threatened species in Colorado. The Owl is small (length of 24 centimeters), long-legged, boldly spotted, and barred with brown and white. The Owl is a breeding species across the plains of eastern Colorado however rarely winters in the state. Nesting habitat is in burrows, especially in both active and inactive prairie dog colonies, located in grasslands, mountain parks, well -drained steppes, deserts, prairies, and agricultural lands from late March through October. The Owl can usually be observed on low perches such as fence posts, dirt mounds or the ground. Clutch size of this Owl averages six to seven and incubation lasts up to 30 days. The owlets usually run and forage at 4 weeks and fly at 6 weeks. Primary threats to existence of this species are habitat loss due to intensive agriculture, habitat degradation and fragmentation due to control of burrowing mammals and predation by cats and dogs. • No Owl individuals were observed on or surrounding the survey area. The survey area is located within the overall range of the black -tailed prairie dog; however, no black -tailed prairie dog colonies are located within the survey area. Much of the land within the survey area is regularly plowed/tilled which further limits the potential use of the survey area by this species. Therefore, any future land use changes within the survey area should have no effect on the continued existence or potential habitat of this species. 8.0 SUMMARY ERC has conducted this screening for federal and state listed threatened and endangered species and general wildlife for the approximately 152 -acre survey area. The following provides key items identified as part of this report: 1. Two primary land use class/vegetation cover types exist within the survey area. Habitat within the survey area is characterized as Cultivated Cropland (95%) and Disturbed (5%). Historic land use for agricultural practices has led to degradation of the native vegetation community. 2. Generally, there are features on the survey area and the surrounding area that provide general habitat for local songbirds, raptors, and small to mid -size mammals. However, habitat within the survey area is somewhat degraded and of lower ecological value from a wildlife perspective due to historic and current land use for agriculture, which has restricted overall growth and establishment of vegetation. Per the CPW SAM data, High Priority Habitat was mapped for bald eagle winter range, little brown myotis overall range and mule deer overall range. The survey area has been subject to frequent agricultural practices, is fragmented on all sides and does not contain the necessary habitat to support the listed species. Therefore, impacts to HPH associated with the listed species is not anticipated. 15 A ERC Meining Property Threatened & Endangered Species and General Wildlife Screening Report 3. Non -raptor birds No non -raptor migratory bird nests were observed within the survey area. However, prior to vegetation removal a nest survey should be completed to ensure that no nests have become established within the survey area and active nests, if any, are not disturbed. Non -eagle Raptors No non -eagle raptor nests were observed and no CPW mapped non -eagle raptor nest protection zones are located within the survey area (CPW 2023a). However, nest activity status can vary seasonally and from year-to-year. Future land use changes may require additional nest surveys (generally between February 1 and September 15 (CPW 2020)) to determine activity status within 1/2 to % mile of the survey area to ensure compliance with CPW recommendations. Eagles No eagle nests or eagles were observed and no CPW mapped eagle nests are located within the survey area (2023a). However, nest activity status can vary seasonally and from year-to-year. If a nest does become established within a %2 -mile of the survey area or within the survey area, CPW recommends a "No Surface Occupancy" and "No Human Encroachment" within 'A -mile radius of active nest sites from December 1 through July 31. Future land use changes may require an additional nest survey (generally between December 1 and July 31 (CPW 2020) to determine activity status within 1/2 -mile of the survey area to ensure compliance with CPW recommendations. 4. No federally listed threatened and endangered species and/or habitat protected under the ESA were identified within the survey area. The survey area is not within designated critical habitat of any federally listed species (USFWS 2008). The vegetation community and features within the survey area were investigated as potential habitat for federally listed species. Any future land use changes will result in No Take on any federal listed species, their habitats, or proposed or designated critical habitat. 5. No State listed threatened or endangered species and/or habitat protected by CPW under Colorado Statute Title 33 were identified within the survey area. The vegetation communities within the survey area were investigated as potential habitat for state listed species. Any future land use changes will have no effect on any state listed species, their habitats, or proposed or designated critical habitat. This report has been prepared by: ECOLOGICAL RESOURCE CONSULTANTS, INC. Tyler Worley, Proj c# E ologist, Certified Ecologist (303) 679-4820 x 105 / tvler@ercolorado.net Reviewed and approved by: David J. Blauch, V.P., Senior Ecologist PWS #2130 (303) 679-4820 x102 / dave@erccolorado.net 16 A inc Meining Property Threatened & Endangered Species and General Wildlife Screening Report 9.0 REFERENCES Belant, J., Gober, P. & Biggins, D. 2008. Mustela nigripes. The IUCN Red List of Threatened Species 2008: e.T14020A4382826. http://clx.doi.org/10.2.305/IUCN.UK.2008.RLTS.T14020A4382826.en. COGCC. Colorado Oil and Gas Conservation Commission. Protection of Wildlife Resources. 1200 Series. 2021. CPW. Colorado Parks and Wildlife. 2020. Recommended Buffer Zones and Seasonal Restrictions for Raptors. Available online at: https://cpw.state.co.us/Docu meats/W ildlifeSpecies/Living With W iid life/Ra ptorBufferGu idelines200 8.pdf CPW. Colorado Parks and Wildlife. 2023a. Species Activity Mapping (SAM), Geographic Information Systems (GIS) Data. Updated December. Available online at: http://www.ar'cgis.corn/home/item.html?id190573c5aba643a0bc058e6f7f0510b7 CPW. Colorado Parks and Wildlife. 2023b. Threatened and Endangered List. Available at htt p://c pw. sta te. co. a s/lea rn/Pages/SOC-T h reate n ed E nd a rige red List. a sL Federal Register. May 2000. Vol. 65, Number 96, pages 31298-31299. Proposed Rules: Endangered and Threatened Species: Colorado Butterfly Plant. Department of the Interior. U.S. Fish and Wildlife Service. Kingery, Hugh. Colorado Breeding Bird Atlas. Colorado Bird Atlas Partnership 1998. NatureServe 2023. NatureServe Explorer Central Database. Ecological Association Comprehensive Report. Available online at: http://explorer.natureserve.org. November. USFWS. US Fish & Wildlife Service. 2007. National Bald Eagle Management Guidelines. Available online at: https://www.fws.gov/sites/default/files/documents/national-bald-eagle-management guidelines 0.pdf USFWS. US Fish & Wildlife Service. 2008. Mapped Critical Habitat for Threatened & Endangered Species. Available online at: iittp://criticalliabitat.fws. ov USFWS. US Fish & Wildlife Service. 2009. USFWS Block -cleared Areas for Black -Footed Ferret Surveys in Colorado. September. Available online at: http://www.fws.gov/niountain- prairie/species/m ainmals/biacicfootedferret/BlockClearanceMap20095eptem berCoioradoState. pdf USFWS. US Fish & Wildlife Service. 2017. Section 4 of the Endangered Species Act. Candidate Species. USFWS. US Fish & Wildlife Service. 2023. Official Species List. List of threatened and endangered species that may occur in your proposed project location, and/or may be affected by your proposed project. Project Code: 2024-0014946. November 9, 2023. 17 EXHIBIT I Soils Information According to the Soil Survey of Weld County, Colorado, Southern Part, (United States Department of Agriculture, Natural Resource Conservation Service, Web Soil Survey 2.0, National Cooperative Soil Survey), there are four major soil types within the project area: 1. Altvan loam, 0 to 1 percent slopes 2. Ascalon loam, 0 to 1 percent slopes 3. Julesberq sandy loam, 0 to 1 percent slopes 4. Olney fine sandy loam, 0 to 1 percent slopes The location of these soil types relative to the project area is illustrated on the attached Natural Resources Conservation Service map and legend. Detailed descriptions of each NRCS soil type are below. Map Unit: 1 — Altvan loam, 0 to 1 percent slopes Map Unit: 8 — Ascalon loam, 0 to 1 percent slopes Map Unit: 29 — Julesberq sandy loam, 0 to 1 percent slopes Map Unit: 46 — Olney fine sandy loam, 0 to 1 percent slopes See attached NRCS report for the permit boundary area. J&T Consulting, Inc. Central Colorado Water Conservancy District Sweet Valley Pit DRMS 112 Permit Application EXHIBIT J Vegetation Information The project site was surveyed for both general vegetation and for the presence of possible wetland areas by Ecological Resource Consultants (ERC). The site consists predominantly of cultivated cropland with small areas of disturbed vegetation around agricultural outbuildings and a single-family home. The vegetation community characterized within the survey area has been disturbed by historic and current land use practices associated with agriculture. Therefore, existing upland vegetation within the survey area represents somewhat degraded forms of these natural vegetation associations. The upland habitats across the survey area are dominated by FAC-UPL species with dry and light-colored soils throughout. Hydric soils, a dominance of hydrophytic vegetation, and/or wetland hydrology were not present in the upland habitats within the survey area. ERC's wetland delineation report is attached which includes descriptions of the general vegetation found on the site and no wetlands were found in the area that are going to be disturbed. The Western Mutual Ditch will not be impacted by the mining proposed for this site. The weed control plan for the site will be as follows and will be discussed and revised if needed by meeting with Tina Booton who is with Weld County's Weed Division Supervisor: Mechanical and Chemical Control — Mowing will occur throughout the growing season in order to keep the plants from going to seed. Mowing will be terminated in late August followed by a herbicide treatment during late September through October — before a hard frost. Where controls cause vegetation to be removed, re -seeding will occur with native grass specified for the area per Weld County's recommendations and the re -seeding will occur the season after the weed control measures have been implemented. Chemical Control Only — A herbicide application will be applied from rosette to bud stage. This will be followed up with a fall application, if needed. The applicator (licensed if required by law for the type of herbicide) must read the label and use a herbicide labeled for the weeds present at the site. Noxious weed species to be managed are defined as those plant species currently identified by the Colorado State Department of Agriculture (CDA) as noxious under the Colorado Noxious Weed Act. The list is often updated and available at: https://www. colorado. gov/pacific/agconservation/noxious-weed-species Management efforts will be directed to those species identified under List A or List B by the CDA. List A species are required to be eradicated, while List B species will be controlled. Efforts to address List C species will follow guidelines of the Weld County Public Works Weed Management Division. LI J&T Consulting, Inc. Central Colorado Water Conservancy District Sweet Valley Pit DRMS 112 Permit Application Ecological Resource Consultants, LLC 2820 Wilderness Place, Suite A I Boulder, CO 180301 I (303) 679-4820 March 26, 2024 J&T Consulting, Inc. 305 Denver Avenue, Suite D Fort Lupton, CO 80621 RE: Aquatic Resource Delineation and Waters of the US Ecological Resource Consultants, LLC (ERC) completed an Aquatic Resource Delineation Report (11-22- 2023) (ERC 2023) for the Meining Property Project Site (Site) located in Weld County, Colorado. ERC 2023 represents a formal aquatic resource delineation in accordance with current US Army Corps of Engineers (USACE) methodologies. ERC 2023 identified three aquatic resources, totaling 2.369 acres, on the Site consisting of an irrigation ditch (Aquatic Resource A) and two irrigation ponds (Aquatic Resource B and C). The following summarizes the current jurisdictional status of each resource under Clean Water Act Section 404. The irrigation ditch (Aquatic Resource A) on Site, would likely not be considered non -jurisdiction, however the project does not propose any disturbance to this resource. • Therefore, if no disturbance is proposed to Aquatic Resources A, no USACE Clean Water Act Section 404 permitting would be required. The two irrigation ponds (Aquatic Resource B and C) meet the exclusion in (b)(5) Artificial lakes or ponds created by excavating or diking dry land to collect and retain water and which are used exclusively for such purposes as stock watering, irrigation, settling basins, or rice growing. • Therefore, Aquatic Resources B and C are not considered a Water of the United States and would not require USACE Clean Water Act Section 404 permitting. In summary, the project as proposed would not impact Waters of the US and therefore would not require USACE Cean Water Act Section 404 permitting. Best Regards, David J. Blauch, V.P., Senior Ecologist (PWS # 2130) (303) 679-4820 x102 / dave@erccolorado.net Ecological Resource 1' LLC 2820 Wilderness Place, Suite A^' Boulder, CO 80301— (303) 679-4820 AQUATIC RESOURCE DELINEATION REPORT FOR MEINING PROJECT SITE WELD COUNTY, COLORADO NOVEMBER 22, 2023 Prepared For: J&T Consulting, Inc. 305 Denver Avenue Suite D Fort Lupton, CO 80621 Contact: JC York Email: jyork@j-tconsulting.com Prepared By: Ecological Resource Consultants, LLC. 2820 Wilderness Place, Suite A Boulder, Colorado 80301 ERC Project #420-2310 A ERC Meining Property Project Site Aquatic Resource Delineation Report February 26, 2024 EXECUTIVE SUMMARY Project Name Meining Property _ Applicant/Owner J&T Consulting, Inc. Survey Area Size (Acres) 152 acres County, State Weld, Colorado Methodology 1987 Corps of Engineers Wetlands Delineation Manual Regional Supplement to the Corps of Engineers Wetland Delineation Manual: Great Plains Region (Version 2.0) 2008 Field Guide to the Identification of the Ordinary High Water Mark (OHWM) in the Arid West Region of the Western United States Summary of Findings Aquatic Resource ID Size (acres) Connectivity' (Yes/No) Classification 2 Description A 2.114 Yes R4SBAx Irrigation Ditch. Assumed connection to Union Ditch and to Latham Ditch and to the South Platte River B 0.141 No PABFx Irrigation Pond C 0.114 No PABFx Irrigation Pond Total Aquatic Resources 2.369 acres Note: All areas that have been investigated in the field are mapped on the enclosed Aquatic Resource Delineation Map (Appendix A). 1 Connectivity Yes=Direct surface connection to other Waters of the US identified. No=No direct surface connection to other Waters of the US identified. 2 Habitat Type based on Cowardin et al. 1979. A ERC Meining Property Project Site Aquatic Resource Delineation Report February 26, 2024 CONTENTS 1.0 Introduction 1 2.0 Survey Area Location 1 3.0 Methodology 4 4.0 Existing Conditions 5 4.1 Landscape Setting 5 4.2 Aquatic Resources 7 Aquatic Resource A (2.114 acres) 7 Aquatic Resource B (0.141 acres) 8 Aquatic Resource C (0.114 acres) 9 4.3 Upland Habitat 10 4.4 Plant Speices Identified Within The Survey Area 11 4.5 Aquatic Resoruce Connectivity Assessment 11 5.0 References 14 APPENDIX A Aquatic Resource Delineation Map Overview APPENDIX B ERC Wetland Determination Data Forms A ERC Meining Property Project Site Aquatic Resource Delineation Report February 26, 2024 1.0 INTRODUCTION This report summarizes the delineation of aquatic resources completed by Ecological Resource Consultants, LLC. (ERC) on behalf of J&T Consulting for the Meining Property Project Site (survey area). This report documents aquatic resource boundary determinations for verification and jurisdictional review by the United States Army Corps of Engineers (USACE), Omaha District Denver Regulatory Office. Project Contact information Applicant/Owner Representative Company Name J&T Consulting, Inc. Ecological Resource Consultants, LLC. Contact Name JC York Natalie Rothman Address 305 Denver Avenue, Suite D Fort Lupton, CO 80621 2820 Wilderness Place, Suite A Boulder, CO 80301 Phone 303-857-6222 303-679-4820 x116 Email Jcyork@j-tconsulting.com natalie@erccolorado.net 2.0 SURVEY AREA LOCATION State Colorado County Weld County Parcel hts 105730100039, 105730100042 Nearest Town Gilcrest lcrest Street Address/ Nearest Intersection Southwest property at the intersection of Weld County Road 42 and CO Highway 60 Latitude, Longitude (Center of Survey Area) 40.286121 °N, -104.815663° W Section, Township, Range Section 30, Township 4 North, Range 66 West Direction from Denver Regulatory Office From the USACE Denver Regulatory Office, travel approximately 13.4 miles on CO470 to 170. Exit east and continue on 1-70 approximately 9.4 miles. Then exit onto 1-76 and continue for 5 miles. Take Exit 5 towards Fort Collins and stay on 1-25 North for 27 miles. Take Exit 243 and head east on CO -66 for 8.4 miles. Then turn left on US -85 N for 3 miles. Turn left again onto CO - 60 and continue until reaching the intersection with County Road 42. Refer to Figure 1 for a location map and a U.S. Geological Survey (USGS) topographic map of the survey area. Refer to Figure 2 for the NRCS Web Soil Survey. A ERC Prepared By: Fort cduna • A ERC 2820 Wilderness Pl. Ste A Boulder, CO 80301 (303) 678-4820 ERC #: 420-2310 Meining Property Project Site Aquatic Resource Delineation Report February 26, 2024 —_4110— J._ ITd 47r3\ FIGURE 1 LOCATION & TOPOGRAPHIC MAP MEINING PROPERTY WELD COUNTY, COLORADO Legend * Approximate Location Survey Area Boundary (152 ac) 0 1,000 2.000 4.000 Feet A ERC Figure 2. NRCS Web Soil Survey Map r ■ i Meining Property Project Site Aquatic Resource Delineation Report February 26, 2024 Map Unit Symbol Map Unit Name Acres (+1-) Hydric soil (Yes/No)3 1 Altvan loam, 0 to 1 percent slopes 6.8 Yes 8 Ascalon loam, 0 to 1 percent slopes _ 31.3 No 29 Julesberg sandy loam, 0 to 1 percent slopes 69.6 No 46 Olney fine sandy loam, 0 to 1 percent slopes 44.7 , No 3 Hydric (Yes/No) — obtained from the USDA NRCS Web Soil Survey Map Unit Description A ERC 3.0 METHODOLOGY Meining Property Project Site Aquatic Resource Delineation Report February 26, 2024 The aquatic resource delineation was conducted following the methodology enumerated in the 1987 Corps of Engineers Wetlands Delineation Manual and the Regional Supplement to the Corps of Engineers Wetland Delineation Manual: Great Plains Region (Version 2.0) (herein referred to as "Supplement") (Environmental Laboratory 1987, USACE 2010). During the field inspection, dominant vegetation was recorded, representative hydrologic indicators were noted, and soil samples were examined for hydric indicators. The USACE and the Environmental Protection Agency (USEPA) jointly define wetlands as: "those areas that are inundated or saturated by surface or ground water at a frequency and duration sufficient to support, and under normal circumstances do support, a prevalence of vegetation typically adapted for life in saturated soil conditions" [40 CFR 230.3(t)]. Three general environmental parameters define a wetland. These parameters must include the presence of hydrophytic vegetation, hydric soils, and wetland hydrology. Except under certain situations, evidence of a minimum of one positive wetland indicator from each of the above parameters must be identified in order to make a positive wetland determination. In addition, waters of the U.S. are also defined as areas that "include essentially all surface waters such as rivers, streams and their tributaries, all wetlands adjacent to these waters, and all ponds, lakes and reservoirs": The boundaries of some waters of the U.S. (i.e., such as streams or lakes) are further defined by the ordinary high water mark (OHWM). The OHWM is characterized as "the line on the shores established by the fluctuations of water and indicated by physical characteristics such as: a clear natural line impressed on the bank, shelving, changes in the character of the soil, wetland vegetation, the presence of litter and debris, and other appropriate means that consider the characteristics of the surrounding areas" (USACE 2005). These definitions are the basis of this delineation method. Areas that do not meet any one of the wetland parameters (hydrophytic vegetation, hydric soils and/or wetland hydrology) or non -vegetated stream channel/open water (OHWM) were classified as a non - wetland (upland) and mapped as such. Any area determined to be potential waters of the U.S. was delineated in the field with pink flagging identified with 'WETLAND BOUNDARY' printed on it and sequentially labeled alpha -numerically (i.e., Al, A2...). Each wetland determination point was recorded using a hand-held Trimble GeoXH global positioning system (GPS) receiver. The resulting GPS data were post processed using GPS Pathfinder Office 5.85 software. Post processing differential correction provided an average horizontal mapping accuracy of +/- 2 feet. Post -processed GPS data were imported into ArcMap Geographic Information Systems (GIS) (Version 10.6) for spatial analysis and mapping. All aquatic resources delineated within the survey area are depicted on the Aquatic Resource Delineation Map (Appendix A). Wetland Determination data sheets are provided in Appendix B. A ERC 4.0 EXISTING CONDITIONS 4.1 LANDSCAPE SETTING Meining Property Project Site Aquatic Resource Delineation Report February 26, 2024 Average Elevation (Feet AMSL) 4,760' Topography Generally flat; sloping southeast Subregion (LRR) LRR G (69 — Upper Arkansas Valley Rolling Plains) M Watershed HUC Wildcat Mound -South Platte River -101900030604 Nearest Waterbody South Platte River Current Landuse Agricultural Historic Landuse Agricultural Dominant Vegetation Communities Cultivated Cropland Reference (NatureServe 2023); (SWReGAP 2011) Vegetation Description The cultivated cropland community is characterized as a non - natural system which includes lands used for the production of annual crops where crop vegetation accounts for greater than 20 percent of the total vegetation and where the land is actively tilled. This community also includes all land being actively tilled. The cultivated cropland community within the survey comprises relatively flat agricultural fields currently planted with corn (Zea mays), and row crops including winter wheat (Triticum aestivum). The agricultural fields appear to be regularly plowed and/or tilled and subject to flood irrigation practices throughout the growing season. Other Vegetation Communities Disturbed Reference (NatureServe 2023) Vegetation Description These features consist of barren grounds associated with oil and gas related activities, closely cropped vegetation such as lawns and landscaping, and urban materials such as buildings and pavement. Tree canopy varies from 0 to 50% (e.g., open to shaded lawns and gardens). Notable Features None. Dates of Field Work November 6, 2023. Weather Sunny, 70 ° F. Typical Climatic/Hydrologic Condition Normal conditions for time of year. A ERC Meining Property Project Site Aquatic Resource Delineation Report February 26, 2024 Refer to Photos 1-6 below for general characteristics of the survey area. Photo 1. Overview facing southwest from the northeastern corner of the survey area. The survey area is primarily a large agricultural field of corn and wheat, which was partially plowed at the time of visit. Photo 3. View northwest of the Western Mutual Ditch on the left side, a farm access road, and active agricultural fields on both sides of the ditch. Photo 6. View facing north from County Road 25 Y, the southernmost edge of Western Mutual Ditch within the survey area. Photo 5. View facing north with Western Mutual Ditch in the foreground with the survey area boundary directly on the far side of the ditch. The field and buildings in the background are on the adjacent property to the north. Photo 2. Overview facing northwest from around the center point of the survey area. Down the center of the photo is Western Mutual Ditch, an irrigation ditch that separates the northwest portion of the survey area. t - tip t S Pk-S.ht' ....: . Photo4. View facing east from the northwest corner showing corn fields and CO Highway 60 in the upper left background. 1 A ERC 4.2 AQUATIC RESOURCES Meining Property Project Site Aquatic Resource Delineation Report February 26, 2024 Delineated aquatic resources were classified according to the physical and biological characteristics using the Classification of Wetlands and Deepwater Habitat of the United States (Cowardin Classification System) (Cowardin et al. 1979). Within the survey area, wetland habitat types were classified based on field evaluation and are summarized in Table 1. Table 1. Summary of Aquatic Resources Delineated Within the Survey Area Aquatic Resource Name Classification Acres Linear Feet Feature Type 4Cowardin Location fiat/long) A R4SBAx 40.28761°N -104.8153°W 2.114 3,290.517 Irrigation Ditch B PABFx 40.28764°N -104.8142°W 0.141 -- Irrigation Pond C PABFx Total 40.28792°N -104.8141°W 0.114 2.3.69 -- -- Irrigation Pond -- A total of 2.369 acres of aquatic resources were delineated by ERC within the survey area. A description of aquatic resource habitat types is provided below. The Aquatic Resource Delineation Maps are provided in Appendix A. Wetland Determination data sheets are provided in Appendix B. Refer to Table 3 for a list of plant species identified within the survey area (Lichvar et al. 2016). AQUATIC RESOURCE A (2.114 ACRES) Aquatic Resource A is a segment of Western Mutual Ditch, an irrigation ditch used for agricultural purposes. The ditch is classified as R4SBAx habitat, being that the riverine system is intermittent, flooded for short periods during growing season, and man-made. Hydrology within the Western Mutual Ditch appears to be supported by surface water run-off from the surrounding upland areas as well as irrigation flows during the growing season. Western Mutual Ditch has a direct surface water connection to the South Platte River, a known Traditional Navigable Waterway (TNW) through various irrigation ditches located downstream. The Western Mutual Ditch appears, via aerial imagery, to flow 9.2 miles northeast and into Union Ditch near La Salle, Colorado. Union Ditch appears to flow 13.8 miles northeast and into Latham Ditch. From Latham Ditch, flows appear to be conveyed 19.2 miles east and into the South Platte River. The ditch was delineated based on the presence of hydrophytic vegetation, hydric soils, and hydrology. Hydrophytic vegetation is significantly disturbed. Due to irrigational flows, all vegetation is stripped from within the ditch. As a result, the OHWM is made more apparent from the vegetation line. Soils within the ditch are generally sandy in texture, meeting the criteria for hydric soil indicator $6 (Stripped Matrix). At the time of the delineation, primary wetland hydrology indicators B1 (Water Marks) 4 Habitat Type based on Cowardin et al. 1979. A E tC Meining Property Project Site Aquatic Resource Delineation Report February 26, 2024 and B3 (Drift Deposits) were observed. Additionally, secondary hydrology indicators included B8 (Sparsely Vegetated Concave Surface), B10 (Drainage Patterns), and D2 (Geomorphic Position). Aquatic Resource A comprises a total of 2.114 acres within the survey area (Appendix A). Refer to photos 7-8 below for characteristics within Aquatic Resource A. Photo 7. Overview facing north from the middle of Aquatic Resource A, Western Mutual Ditch. This irrigation ditch is seasonally flooded during the growing season. The wetland boundary is depicted by the blue line. AQUATIC RESOURCE B (0.141 ACRE) Photo 8. View facing southwest from the approximate midpoint of the stretch of Aquatic Resource A within the survey area. The wetland boundary is depicted by the blue line. Aquatic Resource B is an irrigation pond within the northeastern quadrant of the survey area. The irrigation pond is classified as a palustrine aquatic bed semi -permanently flooded excavated (PABFx) Freshwater Pond habitat. Hydrology within the pond appears to be supported by surface water run-off from the agricultural field as well as irrigation flows from Aquatic Resource A (Western Mutual Ditch) when needed. The pond was delineated based on the presence of hydrophytic vegetation, hydric soils and hydrology. The only vegetation present within the pond was Pennsylvania Smartweed (Polygonum pensylvanicum). The vegetation within the pond was a hydrophytic species (FACW). Soils within the pond are generally sandy in texture, meeting the criteria for hydric soil indicator S5 (Sandy Redox). At the time of the delineation, primary wetland hydrology indicators Al (Surface Water), A3 (Saturation), and B1 (Water Marks) were observed. Additionally, secondary hydrology indicators included B8 (Sparsely Vegetated Concave Surface), D2 (Geomorphic Position), and D5 (FAC-Neutral Test). Aquatic Resource B comprises a total of 0.141 acre within the survey area (Appendix A). Refer to photos 9-10 below for characteristics within Aquatic Resource B. Ai c Meining Property Project Site Aquatic Resource Delineation Report February 26, 2024 Photo 9. Overview facing north of Aquatic Resource B, an irrigation pond within the northeast quadrant of the survey area. This pond is fed by irrigation water from the Western Mutual Ditch, Aquatic Resource A. The boundary is depicted by the blue line. Photo 10. View facing northeast of Aquatic Resource B, an irrigation pond. The boundary is depicted by the blue line. AQUATIC RESOURCE C (0.114 ACRE) Aquatic Resource C is an irrigation pond in the northeastern quadrant of the survey area, adjacent to Aquatic Resource B. The pond contains a PABFx habitat as well. The hydrology is primarily supported by surface water run-off from the surrounding agricultural fields as well as irrigation flows from Aquatic Resource A, the Western Mutual Ditch via a valve, when needed. The irrigation pond was delineated based on the presence of hydrophytic vegetation, hydric soils, and hydrology. The only vegetation present within the pond was Pennsylvania Smartweed (Polygonum pensylvanicum). The vegetation within the pond was a hydrophytic species (FACW). Soils within the pond are generally sandy in texture, meeting the criteria for hydric soil indicator S5 (Sandy Redox). At the time of the delineation, primary wetland hydrology indicators Al (Surface Water), A3 (Saturation), and B1 (Water Marks) were observed. Additionally, secondary hydrology indicators included B8 (Sparsely Vegetated Concave Surface), D2 (Geomorphic Position), and D5 (FAC-Neutral Test). Aquatic Resource C comprises a total of 0.114 acre within the survey area (Appendix A). Refer to photos 11-12 below for characteristics within Aquatic Resource C. ERC Meining Property Project Site Aquatic Resource Delineation Report February 26, 2024 Photo 11. Overview facing southwest of Aquatic Resource C, an irrigation pond in the northeast quadrant of the survey area. This pond is fed by irrigation water from the Western Mutual Ditch, Aquatic Resource A. The boundary is depicted by the blue line. 4.3 UPLAND HABITAT Photo 12. Overview facing south of Aquatic Resource C, an irrigation pond. The boundary is depicted by the blue line. The wetland delineation identified approximately 149.9 acres of upland habitat within the survey area, consisting predominantly of cultivated cropland with small areas of disturbed vegetation around agricultural outbuildings and a single-family home. Topography across the survey area is generally flat with a topographic high point of 4,762 feet at the southwestern corner of the survey area. The vegetation community characterized within the survey area has been disturbed by historic and current land use practices associated with agriculture. Therefore, existing upland vegetation within the survey area represents somewhat degraded forms of these natural vegetation associations. The upland habitats across the survey area are dominated by FAC-UPL species with dry and light-colored soils throughout. Hydric soils, a dominance of hydrophytic vegetation, and/or wetland hydrology were not present in the upland habitats within the survey area. Refer to Table 3 for a list of plant species identified within the survey area (Lichvar et al. 2016). A ERC Meining Property Project Site Aquatic Resource Delineation Report February 26, 2024 4.4 PLANT SPEICES IDENTIFIED WITHIN THE SURVEY AREA 1'Scientific•Name Agropyron cristatum Bassia scoparia Bothriochloa ischaemum Bouteloua dactyloides Hesperostipa comata Poa fendleriana Polygonum pensylvanicum Rumex crispus Salsola kali Sporobolus cryptandrus Tribulus terrestris Triticum aestivum Zea mays Table 3. Plant Species Identified in Survey,Area Common Name Crested Wheatgrass Kochia Yellow bluestem Buffalograss Needle -and -thread grass Muttongrass Pennsylvania smartweed Curly Dock Russian Thistle Sand dropseed Caltrop Bread wheat Indian Corn WIS* UPL FACU UPL FACU UPL UPL FACW FAC FACU FACU UPL UPL UPL * Wetland Indicator Status (WIS) — Great Plains Regions: OBL occurs in aquatic resources > 99% of time FACW = occurs in aquatic resources 67-99% of time FAC = occurs in aquatic resources 34-66% of time FACU = occurs in aquatic resources 1-33% of time UPL = occurs in uplands > 99% of time WIS Source: Lichvar, R.W., D.L. Banks, W.N. Kirchner, and N.C. Melvin. 2016. The National Wetland Plant List: 2016 wetland ratings. Phytoneuron 2016-30: 1-17. Published 28 April 2016. ISSN 2153 733X http://www.phytoneuron.net/ 4.5 AQUATIC RESORUCE CONNECTIVITY ASSESSMENT Aquatic Resource A, the Western Mutual Ditch (Yellow line on Figure 3), originates from the South Platte River (Red star on Figure 3). From the survey area, Aquatic Resource A conveys flows northeast approximately 9.2 miles and into Union Ditch (Purple line on Figure 3). From Union Ditch, flows are conveyed northeast approximately 13.8 miles and into Latham Ditch (Green line on Figure 3). From Latham Ditch, flows are conveyed east approximately 19.2 miles and into the South Platte River (Yellow star on Figure 3). A ERC Figure 3. Connectivity Assessment Meining Property Project Site Aquatic Resource Delineation Report February 26, 2024 1. Red star — Western Mutual Ditch Intake from the South Platte River 2. Yellow line — Western Mutual Ditch 3. Purple polygon — Survey Area 4. Turquoise line— Union Ditch 5. Green line — Latham Ditch 6. Yellow star — Confluence with the South Platte River Table 3. Aquatic Resource Connectivity Assessment Connectivity to the Waters of the U.S. Aquatic Resource Name Connectivity Path and Direction Endpoint Feature Type A Aquatic Resource A is the Western Mutual Ditch, an irrigation ditch bisecting the survey area from the southwest. Through aerial imagery, it appears the Western Mutual Ditch flows 9.2 miles northeast and into Union Ditch. From Union Ditch, flows appear to be conveyed northeast 13.8 miles and into Latham Ditch. From Latham Ditch, flows appear to be conveyed east 19.2 miles and into the South Platte River. South Platte River R4SBAx — Seasonal flooding intermittent channel, human -excavated B Aquatic Resource B is an irrigation pond in the northeast quadrant of the survey area. The pond connects to Western Mutual Ditch, flowing into the South Platte River, which is waters of the U.S. Uplands PABFx — Semi -permanently flooded freshwater pond, human -excavated C Aquatic Resource C is an irrigation pond In the northeast quadrant of the survey area. The pond connects to Western Mutual Ditch, flowing into the South Platte River, which is waters of the U.S. Uplands PABFx — Semi -permanently flooded freshwater pond, human excavated A ERC This report has been prepared by: ECOLOGICAL RESOURCE CONSULTANTS, INC. /4„ieir- Meining Property Project Site Aquatic Resource Delineation Report February 26, 2024 Natalie Rothman, Staff Ecologist (303) 679-4820 x116 / Natalie@erccolorado.net Reviewed and approved by: David J. Blauch, V.P., Senior Ecologist (PWS # 2130) (303) 679-4820 x102 / dave@erccolorado.net A ERC 5.0 REFERENCES Meining Property Project Site Aquatic Resource Delineation Report February 26, 2024 Cowardin, L. M., V. Carter, F. C. Golet, and E. T. LaRoe. 1979. Classification of wetlands and deepwater habitats of the United States. FWS/OBS-79/31. USDI Fish & Wildlife Service, Office of Biological Services, Washington, DC. 103 pp. Environmental Laboratory. 1987 Corps of Engineers Wetlands Delineation Manual. Technical Report Y-87- 1, U.S. Army Corps of Engineer Waterways Experiment Station. Vicksburg, MS. Faber-Langendoen. 2014. Divisions, Macrogroups and Groups for the Revised US. National Vegetation Classification. NatureServe, Arlington, VA. Plus appendices (in preparation). Google Earth Imagery. 2023. Available online at https://www.Roogle.com/earth/. November. Lichvar, R.W., D.L. Banks, W.N. Kirchner, and N.C. Melvin. 2016. The National Wetland Plant List: 2016 wetland ratings. Phytoneuron 2016-30: 1-17. Published 28 April 2016. ISSN 2153 733X NatureServe 2023. NatureServe Explorer Central Database. Ecological Association Comprehensive Report. Available online at: http://explorer.natureserve.org. November. Natural Resource Conservation Service (NCRS). Web Soil Survey. Soil Map. Available online at: https://websoilsurvev.sc.egov.usda.gov/App/Websoilsurvey.aspx. November U.S. Army Corps of Engineers (USACE). 2005. Regulatory Guidance Letter, Subject: Ordinary High Water Mark. RGL 05-05. Department of the Army, Washington, D.C. http://www.usace.army.mii/Portals/2/dots/civilworks/RG LJig105-05. pdf. U.S. Army Corps of Engineers (USACE). 2010. USACE. Regional Supplement to the Corps of Engineers Wetland Delineation Manual: Great Plains Region (Version 2.0), ed. J. S. Wakeley, R. W. Lichvar, and C. V. Noble. ERDC/EL TR-10-1. Vicksburg, MS: U.S. Army Engineer Research and Development Center. Available online at: http://www.usace.army.mll/Portals/2/dots/civilworks/regulatory/reg supp/gb pp.pdf ERC Meining Property Project Site Aquatic Resource Delineation Report February 26, 2024 APPENDIX A !TOTES 1 THE SURVEY AREA IS LOCATED IN WELD COUNTY, COLORADO' SECTION 30; TOWNSHIP 4 NORTH; RANGE 66 WEST 2 AQUATIC RESOURCE LOCATIONS WERE FIELD DELINEATED BY ERC, USING THE 1907 CORPS OF ENGINEERS WETLANDS DELINEATION MANUAL AND THE REGIONAL SUPPLEMENT TO THE CORPS OF ENGINEERS WETLAND DELINEATION MANUAL; GREAT PLAINS REGION (VERSION 2.0)(MAY 2010). 3. THE AREAS WERE I IELD DELINEATED AND MAPPED ON NOVEMBER 6 AND 17, 2023 WITH HAND-HELD SUB -METER ACCURACY GLOBAL POSITIONING SYSTEM (GPS) EQUIPMENT (+/-2 FEET) AQUATIC RESOURCE MAPPING WAS PREPARED BY ERC USING GEOGRAPHIC INFORMATION SYSTEMS (GIS) 4. SATELLITE IMAGERY WAS OBTAINED FROM ESRI WORLD IMAGERY (MAXAR) DATED NOVEMBER 2, 2023. 5. THE PROJECTED COORDINATE SYSTEM FOR THE AQUATIC RESOURCE DELINEATION MAPPING IS: NAD63/COLORADO STATE PLANE NORTH, FEET. 6 REFER TO THE AQUATIC RESOURCE DELINEATION REPORT FOR MORE DETAILED INFORMATION { rjirtxJ,lI iol1lil+Dr DUITh 1• r Summary of At uatl c R4.01111%4$ Delineated Within the Survey Area Aquatic Resource Name A Total .2.3f 9 RASBAn Cleselfatlon Location ttmilon8) Acres AR -A17111,, aso AI[ air i 4O113761'N- 104.8153V 40.28764'N • 2P4.6142' W 40.2.878 N - 104.8141'W �Ad - ,T Prepared By: linear Feet Connectivity to Waters of the U.S. 3,790.511 tes :sate r u f Endpoint South Platte Rmev WI ends Uplands {}1trh: ldifl�ry� • 'µ. — ,<, e fie.•-- • r Aquatic Resource C Aquatic Resource B atic Resource A I Legend Survey Area (152 ac) Data Point Location & ID o Flag Point Flow Direction Delineated Aquatic Resource Habitat Type (Cowardin) PABFx R4SBAx A ERC 2820 Wilderness Pl. Ste A Boulder, CO 80301 (303) 679-4820 ERC #: 420-2310 APPENDIX A AQUATIC RESOURCE DELINEATION MAP MEINING PROPERTY WELD COUNTY, COLORADO 0 375 750 1,500 Feet A ERC Meining Property Project Site Aquatic Resource Delineation Report February 26, 2024 APPENDIX B U.S. Army Corps of Engineers WETLAND DETERMINATION DATA SHEET — Great Plains Region See ERDC/EL TR-10-1; the proponent agency is CECW-CO-R OMB Control #: 0710-0024, Exp: 11/30/2024 Requirement Control Symbol EXEMPT: (Authority: AR 335-15, paragraph 5-2a) Project/Site: Meining Property Applicant/Owner: J&T Engineering City/County: Gilcresh / Weld Investigator(s): T. Worley, N. Rothman Sampling Date: 11/6/2023 State: CO Sampling Point: AR - Al 7U Section, Township, Range: 30. 4 North, 66 West Landform (hillside, terrace, etc.): Agricultural field Local relief (concave, convex, none): None Subregion (LRR): LRR G. MLRA 67B Lat: 40.28611 °N Soil Map Unit Name: Ascalon loam, 0-1% slopes Slope (%): 0 Long: -104.8194 °W Datum: NAD83 Are climatic / hydrologic conditions on the site typical for this time of year? Yes Y NWI classification: NA No (If no, explain in Remarks.) Are Vegetation N , Soil N , or Hydrology N significantly disturbed? Are "Normal Circumstances" present? Yes Y No Are Vegetation N , Soil N , or Hydrology N naturally problematic? (If needed, explain any answers in Remarks.) SUMMARY OF FINDINGS — Attach site map showing sampling point locations, transects, important features, etc Hydrophytic Vegetation Present? Yes No X Is the Sampled Area within a Wetland? Yes No X Hydric Soil Present? Yes No X Wetland Hydrology Present? Yes No X Remarks: Upland data point paired with AR-A17W. Data point situated above the Western Mutual Ditch in uplands. Survey area is frequently tilled/plowed for agricuture. VEGETATION — Use scientific names of plants. Absolute Dominant Indicator Tree Stratum (Plot size: 30 ) % Cover Species? Status Dominance Test worksheet: 1. Number of Dominant Species That 2. Are OBL, FACW, or FAC: 0 (A) 3. Total Number of Dominant Species 4. Across All Strata: 3 (B) =Total Cover Percent of Dominant Species That SaplinglShrub Stratum (Plot size: 15 ) Are OBL, FACW, or FAC: 0.0% (A/B) 1. 2. Prevalence Index worksheet: 3. Total % Cover of: Multiply by: 4. OBL species 0 x 1 = 0 5. FACW species 0 x 2 = 0 =Total Cover FAC species 0 x 3 = 0 Herb Stratum (Plot size: 5 ) FACU species 20 x 4 = 80 1. Poa fendleriana 40 Yes UPL UPL species 80 x 5 = 400 2. Bothriochloa ischaemum 25 Yes UPL Column Totals: 100 (A) 480 (B) 3. Sporobolus cryptandrus 20 Yes FACU Prevalence Index = B/A = 4.80 4. Hesperostipa comata 15 No UPL 5. Hydrophytic Vegetation Indicators: 6. 1 - Rapid Test for Hydrophytic Vegetation 7. _ 2 - Dominance Test is >50% 8. _ 3 - Prevalence Index is 53.0' 9• _ - Morphological Adaptations' (Provide supporting 10. _4 data in Remarks or on a separate sheet) 100 =Total Cover Problematic Hydrophytic Vegetation' (Explain) Woody Vine Stratum (Plot size: 5 ) _ 'Indicators of hydric soil and wetland hydrology must t be present, unless disturbed or problematic. 2. Hydrophytic =Total Cover Vegetation % Bare Ground in Herb Stratum 0 Present? Yes No X Remarks: Upland point adjacent to Wesetern Mutual Ditch within agricultural land. null FARM F11A-rl 1111 2IL1R Great PJainsr Vprcirtn 0 SOIL Sampling Point: AR - A17U Profile Description: (Describe to the depth needed to document the indicator or confirm the absence Depth Matrix Redox Features of indicators.) Remarks (inches) Color (moist) % Color (moist) % Type' Loc2 Texture 0-6 7.5YR 4/3 100 Sandy 'Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2Location: PL=Pore Lining, M=Matrix. Hydric Soil Indicators: (Applicable to all LRRs, unless Histosol (Al) Histic Epipedon (A2) otherwise noted.) _ Sandy Gleyed Matrix (S4) (F16) H) Indicators for Problematic Hydric Soils3: 1 cm Muck (A9) (LRR I, J) Redox (S5) _ Coast Prairie Redox (A16) (LRR F, G, H) Black Histic (A3) Hydrogen Sulfide (A4) _Sandy _ Stripped Matrix (S6) Loamy Mucky Mineral (F1) _ _ Dark Surface (S7) (LRR G) High Plains Depressions (F16) Stratified Layers (A5) (LRR F) _1 cm Muck (A9) (LRR F, G, H) Depleted Below Dark Surface (A11) _ Gleyed Matrix (F2) _ (LRR H outside of MLRA 72 & 73) Reduced Vertic (F18) _Loamy _ Depleted Matrix (F3) Redox Dark Surface (F6) _ Red Parent Material (F21) _Thick Dark Surface (Al2) Sandy Mucky Mineral (S1) _2.5 cm Mucky Peat or Peat (S2) (LRR G, H) _5 cm Mucky Peat or Peat (S3) (LRR F) _ _ Depleted Dark Surface (F7) _ Very Shallow Dark Surface (F22) _ Redox Depressions (F8) _ Other (Explain in Remarks) _High Plains Depressions (MLRA 72 & 73 of LRR 3lndicators of hydrophytic vegetation and wetland hydrology must be present, unless disturbed or problematic. Restrictive Layer (if observed): Type: Compaction Hydric Soil Present? Yes No X Depth (inches): 6 Remarks: Compaction present from vehicle travel along the Western Mutual Ditch. No hydric soil indicators present. HYDROLOGY Wetland Hydrology Indicators: Primary Indicators (minimum of one is required; check all that apply) Secondary Indicators (minimum of two required) _Surface Water (Al) _Salt Crust (B11) High Water Table (A2) Aquatic Invertebrates (B13) Surface Soil Cracks (B6) Concave Surface (B8) (B10) on Living Roots (C3) on Aerial Imagery (C9) (D2) (D7) (LRR F) _ Sparsely Vegetated _Saturation (A3) Hydrogen Sulfide Odor (C1) _ Drainage Patterns Oxidized Rhizospheres _ _Water Marks (B1) _ Dry -Season Water Table (C2) Sediment Deposits (B2) Oxidized Rhizospheres on Living Roots _ (C3) (where tilled) Crayfish Burrows (C8) _ Drift Deposits (B3) (where not tilled) _ Algal Mat or Crust (B4) _Presence of Reduced Iron (C4) - Saturation Visible Iron Deposits (B5) _Thin Muck Surface (C7) Inundation Visible on Aerial Imagery (B7) _ Other (Explain in Remarks) _ Water -Stained Leaves (B9) _ _Geomorphic Position _ FAC-Neutral Test (D5) _ Frost -Heave Hummocks Field Observations: Surface Water Present? Yes No X Depth (inches): Wetland Hydrology Present? Yes No X Water Table Present? Yes No X Depth (inches): Saturation Present? Yes No X Depth (inches): (includes capillary fringe) Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: Remarks: No wetland indicators present. ENGFORM6116 s,JUL211.8 r ♦of U.S. Army Corps of Engineers WETLAND DETERMINATION DATA SHEET — Great Plains Region See ERDC/EL TR-10-1; the proponent agency is CECW-CO-R OMB Control #: 0710-0024, Exp: 11/30/2024 Requirement Control Symbol EXEMPT: (Authority: AR 335-15, paragraph 5-2a) Project/Site: Meining Property City/County: Gilcrest / Weld Applicant/Owner: J&T Consulting Sampling Date: 11/6/2023 State: CO Sampling Point: AR - Al 7W Investigator(s): T. Worley, N. Rothman Section, Township, Range: 30, 4 North, 66 West Landform (hillside, terrace, etc.): Western Mutual Ditch Subregion (LRR): LRR G, MLRA 67B Lat: 40.28619 °N Soil Map Unit Name: Ascalon loam, 0-1% slopes Local relief (concave, convex, none): Concave Slope (%): 2 Long: -104.8195 °W Datum: NAD83 NWI classification: R4SBAx Are climatic / hydrologic conditions on the site typical for this time of year? Yes Y No (If no, explain in Remarks.) Are Vegetation Y , Soil N , or Hydrology N significantly disturbed? Are "Normal Circumstances" present? Yes Y No Are Vegetation N , Soil N , or Hydrology N naturally problematic? (If needed, explain any answers in Remarks.) SUMMARY OF FINDINGS — Attach site map showing sampling point locations, transects, important features, etc Hydrophytic Vegetation Present? Yes X No Is the Sampled Area within a Wetland? Yes X No Hydric Soil Present? Yes X No Wetland Hydrology Present? Yes X No Remarks: Data point paired with AR - A17U. Data point within the Western Mutual Ditch. The ditch is used primarily for irrigational purposes. VEGETATION — Use scientific names of plants. Absolute Dominant Indicator Tree Stratum (Plot size: 30 ) % Cover Species? Status Dominance Test worksheet: 1. Number of Dominant Species That 2 Are OBL, FACW, or FAC: (A) 3. Total Number of Dominant Species 4. Across All Strata: (B) =Total Cover Percent of Dominant Species That Sapling/Shrub Stratum (Plot size: 15 ) Are OBL, FACW, or FAC: (A/B) 1. 2. Prevalence Index worksheet: 3. Total % Cover of: Multiply by: 4. OBL species x 1 = 5. FACW species x 2 = =Total Cover FAC species x 3 = Herb Stratum (Plot size: 5 ) FACU species x 4 = 1. UPL species x 5 = 2. Column Totals: (A) (B) 3. Prevalence Index = B/A = 4. 5. Hydrophytic Vegetation Indicators: 6. 1 - Rapid Test for Hydrophytic Vegetation 7. _ - Dominance Test is >50% 8. _2 3 - Prevalence Index is ≤3.01 9. _ 4 - Morphological Adaptations' (Provide supporting 10. _ data in Remarks or on a separate sheet) =Total Cover Problematic Hydrophytic Vegetation' (Explain) Woody Vine Stratum (Plot size: 5 ) _ 'Indicators of hydric soil and wetland hydrology must 1. be present, unless disturbed or problematic. 2. Hydrophytic =Total Cover Vegetation % Bare Ground in Herb Stratum 100 Present? Yes No Remarks: Vegetation has been stripped from irrigational flows. No vegetation is present within the ditch. An OHWM is apparent throughout the ditch. No. Ff1RM R11R-r1 1111 9012 r-Iraat Plainc . Vprcinn 0 SOIL Sampling Point: AR - Al 7W Profile Description: (Describe to the depth needed to document the indicator or Depth Matrix Redox Features confirm the absence of indicators.) Texture Remarks (inches) Color (moist) % Color (moist) % Type' Loc2 0-5 7.5YR 3/2 100 5-11 10YR 4/3 40 10YR 5/8 60 CS M Sandy Sandy redox present from 5" 11-18 10YR 5/4 15 5YR 4/6 85 CS M Sandy Sandy redox present 'Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2Location: PL=Pore Lining, M=Matrix. Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) _ Histosol (A1) _ Sandy Gleyed Matrix (S4) (F16) H) Indicators for Problematic Hydric Soils3: 1 cm Muck (A9) (LRR I, J) Histic Epipedon (A2) Redox (S5) _ Prairie Redox (A16) (LRR F, G, H) ~_ Black Histic (A3) _Sandy X Stripped Matrix (S6) _Coast Dark Surface (S7) (LRR G) Hydrogen Sulfide (A4) Mucky Mineral (F1) _ High Plains Depressions (F16) _ _ Stratified Layers (A5) (LRR F) _ 1 cm Muck (A9) (LRR F, G, H) Depleted Below Dark Surface (A11) _Loamy Loamy Gleyed Matrix (F2) _ (LRR H outside of MLRA 72 & 73) Reduced Vertic (F18) _ _ Depleted Matrix (F3) Redox Dark Surface (F6) _ Red Parent Material (F21) Dark Surface (Al2) _ Depleted Dark Surface (F7) _ Very Shallow Dark Surface (F22) _Thick _Sandy Mucky Mineral (S1) _ Redox Depressions (F8) _ Other (Explain in Remarks) _ 2.5 cm Mucky Peat or Peat (S2) (LRR G, H) _ _ High Plains Depressions _ 3lndicators of hydrophytic vegetation and wetland hydrology must be present, unless disturbed or problematic. ___ 5 cm Mucky Peat or Peat (S3) (LRR F) (MLRA 72 & 73 of LRR Restrictive Layer (if observed): Type: Hydric Soil Present? Yes X No Depth (inches): Remarks: Hydric soil indicator S6 present. HYDROLOGY Wetland Hydrology Indicators: Primary Indicators (minimum of one is reauired: check all that apply) Secondary Indicators (minimum of two required) Surface Water (Al) Salt Crust (B11) _ Surface Soil Cracks (B6) X Sparsely Vegetated Concave Surface (B8) _ _ High Water Table (A2) Aquatic Invertebrates (B13) _ Saturation (A3) Hydrogen Sulfide Odor (C1) X Drainage Patterns (B10) _Oxidized Rhizospheres on Living Roots (C3) (C3) (where tilled) ~ Crayfish Burrows (C8) _ Saturation Visible on Aerial Imagery (C9) X Geomorphic Position (D2) _ FAC-Neutral Test (D5) Frost -Heave Hummocks (D7) (LRR F) _ _ X Water Marks (B1) Dry -Season Water Table (C2) —_ Sediment Deposits (B2) Oxidized Rhizospheres on Living Roots X Drift Deposits (B3) (where not tilled) Algal Mat or Crust (B4) Presence of Reduced Iron (C4) _ _ Iron Deposits (B5) _ Thin Muck Surface (C7) _ Inundation Visible on Aerial Imagery (B7) _ Other (Explain in Remarks) Water -Stained Leaves (B9) Field Observations: Surface Water Present? Yes No X Depth (inches): Wetland Hydrology Present? Yes X No Water Table Present? Yes No X Depth (inches): Saturation Present? Yes No X Depth (inches): (includes capillary fringe) Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: Remarks: Data point within the Western Mutual Ditch. The ditch exhibits primary indicators B1 and B3. Additionally, secondary indicators B8, B10 and D2. v1Jr:, ri Plur a44a_s I'll 1111 a C.rnnr Plaine .._ Wore{nn ' U.S. Army Corps of Engineers WETLAND DETERMINATION DATA SHEET — Great Plains Region See ERDC/EL TR-10-1; the proponent agency is CECW-CO-R OMB Control #: 0710-0024, Exp: 11/30/2024 Requirement Control Symbol EXEMPT: (Authority: AR 335-15, paragraph 5-2a) Project/Site: Meining Property Applicant/Owner: J&T Engineering City/County: Gilcresh / Weld Investigator(s): T. Worley, N. Rothman Sampling Date: 11/6/2023 State: CO Sampling Point: AR - A24U Section, Township, Range: 30, 4 North, 66 West Landform (hillside, terrace, etc.): Agricultural field Local relief (concave, convex, none): None Subregion (LRR): LRR G, MLRA 67B Lat: 40.28963 °N Soil Map Unit Name: Julesburg sandy loam, 0-1% slopes Slope (%): 0 Long: -104.8114 °W Datum: NAD83 NWI classification: NA Are climatic / hydrologic conditions on the site typical for this time of year? Yes Y No (If no, explain in Remarks.) Are Vegetation N , Soil N , or Hydrology N significantly disturbed? Are "Normal Circumstances" present? Yes Y No Are Vegetation N , Soil N , or Hydrology N naturally problematic? (If needed, explain any answers in Remarks.) SUMMARY OF FINDINGS — Attach site map showing sampling point locations, transects, important features, etc Hydrophytic Vegetation Present? Yes No X Is the Sampled Area within a Wetland? Yes No X Hydric Soil Present? Yes No X Wetland Hydrology Present? Yes No X Remarks: Upland data point paired with AR-A24W. Data point situated above the Western Mutual Ditch in uplands. Project area is frequently tilled/plowed for agricuture. VEGETATION — Use scientific names of plants. Absolute Dominant Indicator Tree Stratum (Plot size: 30 ) % Cover Species? Status Dominance Test worksheet: 1. Number of Dominant Species That 2. Are OBL, FACW, or FAC: 0 (A) 3. Total Number of Dominant Species 4. Across All Strata: 3 (B) =Total Cover Percent of Dominant Species That Saolinq/Shrub Stratum (Plot size: 15 ) Are OBL, FACW, or FAC: 0.0% (A/B) 1. 2. Prevalence Index worksheet: 3. Total % Cover of: Multiply by: 4. OBL species 0 x 1 = 0 5. FACW species 0 x 2 = 0 =Total Cover FAC species 0 x 3 = 0 Herb Stratum (Plot size: 5 ) FACU species 30 x 4 = 120 1. Poa fendleriana 25 Yes UPL UPL species 65 x 5 = 325 2. Bothriochloa ischaemum 20 Yes UPL Column Totals: 95 (A) 445 (B) 3. Tribulus terrestris 20 Yes UPL Prevalence Index = B/A = 4.68 4. Bassia scoparia 15 No FACU 5. Salsola kali 15 No FACU Hydrophytic Vegetation Indicators: 6. 1 - Rapid Test for Hydrophytic Vegetation 7. _ 2 - Dominance Test is >50% 8. _ 3 - Prevalence Index is 53.0' 9. _ - Morphological Adaptations' (Provide supporting 10. _4 data in Remarks or on a separate sheet) 95 =Total Cover Problematic Hydrophytic Vegetation' (Explain) Woody Vine Stratum (Plot size: 5 ) _ 'Indicators of hydric soil and wetland hydrology must 1. be present, unless disturbed or problematic. 2. Hydrophytic =Total Cover Vegetation % Bare Ground in Herb Stratum 5 Present? Yes No X Remarks: Upland point adjacent to Wesetern Mutual Ditch within agricultural land. Na FflRM AVIA.� 1111 2R1R r;ro2t Pining — Vwrcinn .0 SOIL Sampling Point: AR - A24U Profile Description: (Describe to the depth needed to document the indicator or Depth Matrix Redox Features confirm the absence of indicators.) Texture Remarks (inches) Color (moist) % Color (moist) % Type' Loc2 0-6 7.5YR 4/3 100 Sandy 6-12 10YR 4/3 100 Sandy 12-21 10YR 4/1 100 Sandy 'Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2Location: PL=Pore Lining, M=Matrix. Hydric Soil Indicators: (Applicable to all LRRs, unless _ Histosol (A1) _ Histic Epipedon (A2) otherwise noted.) _ Sandy Gleyed Matrix (S4) (F16) H) Indicators for Problematic Hydric Soils3: _ 1 cm Muck (A9) (LRR I, J) ~ Coast Prairie Redox (A16) (LRR F, G, H) Dark Surface (S7) (LRR G) _ Sandy Redox (S5) _ Stripped Matrix (S6) _ Black Histic (A3) Hydrogen Sulfide (A4) Loamy Mucky Mineral (F1) High Plains Depressions (F16) Stratified Layers (A5) (LRR F) _ Loamy Gleyed Matrix (F2) _ (LRR H outside of MLRA 72 & 73) Reduced Vertic (F18) _ _ 1 cm Muck (A9) (LRR F, G, H) _ Depleted Matrix (F3) Depleted Below Dark Surface (A11) _ _ Redox Dark Surface (F6) Depleted Dark Surface (F7) _ Red Parent Material (F21) _Thick Dark Surface (Al2) _ Very Shallow Dark Surface (F22) Mucky Mineral (S1) _ Redox Depressions (F8) _ Other (Explain in Remarks) 3lndicators of hydrophytic vegetation and wetland hydrology must be present, unless disturbed or problematic. _Sandy _ 2.5 cm Mucky Peat or Peat (S2) (LRR G, H) _ 5 cm Mucky Peat or Peat (S3) (LRR F) _ _ High Plains Depressions (MLRA 72 & 73 of LRR Restrictive Layer (if observed): Type: Hydric Soil Present? Yes No X Depth (inches): Remarks: No hydric soil indicators present. HYDROLOGY Wetland Hydrology Indicators: Primary Indicators (minimum of one is required; Surface Water (Al) _ High Water Table (A2) Saturation (A3) Water Marks (B1) Sediment Deposits (B2) Drift Deposits (B3) Algal Mat or Crust (B4) Iron Deposits (B5) _ Inundation Visible on Aerial Imagery (B7) Water -Stained Leaves (B9) check all that apply) Salt Crust (B11) Aquatic Invertebrates (B13) _Hydrogen Sulfide Odor (C1) _ Dry -Season Water Table (C2) Oxidized Rhizospheres on Living Roots (C3) (where not tilled) Presence of Reduced Iron (C4) Thin Muck Surface (C7) Other (Explain in Remarks) Secondary Indicators (minimum of two required) Surface Soil Cracks (B6) Sparsely Vegetated Concave Surface (B8) _ Drainage Patterns (B10) Oxidized Rhizospheres on Living Roots (C3) (where tilled) Crayfish Burrows (C8) Saturation Visible on Aerial Imagery (C9) Geomorphic Position (D2) FAC-Neutral Test (D5) Frost -Heave Hummocks (D7) (LRR F) Field Observations: Surface Water Present? Water Table Present? Saturation Present? (includes capillary fringe) Yes Yes Yes No X No X No X Depth (inches): Depth (inches): Depth (inches): Wetland Hydrology Present? Yes No X Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: Remarks: No wetland indicators present. FNr. FOAM 6146, ii a 9114R GraAirata;nc Ver auto .0 U.S. Army Corps of Engineers WETLAND DETERMINATION DATA SHEET — Great Plains Region See ERDC/EL TR-10-1; the proponent agency is CECW-CO-R OMB Control #: 0710-0024, Exp: 11/30/2024 Requirement Control Symbol EXEMPT: (Authority: AR 335-15, paragraph 5-2a) Project/Site: Meining Property Applicant/Owner: J&T Consulting City/County: Gilcrest / Weld Investigator(s): T. Worley, N. Rothman Sampling Date: 11/6/2023 State: CO Sampling Point: AR - A24W Section, Township, Range: 30, 4 North, 66 West Landform (hillside, terrace, etc.): Western Mutual Ditch Local relief (concave, convex, none): Concave Subregion (LRR): LRR G, MLRA 67B Lat: 40.28968 °N Long: -104.8113 °W Soil Map Unit Name: Julesburg sandy loam 0-1% slopes Slope (%): 2 Datum: NAD83 NWI classification: R4SBAx Are climatic / hydrologic conditions on the site typical for this time of year? Yes Y No (If no, explain in Remarks.) Are Vegetation Y , Soil N , or Hydrology N significantly disturbed? Are "Normal Circumstances" present? Yes Y No Are Vegetation N , Soil N , or Hydrology N naturally problematic? (If needed, explain any answers in Remarks.) SUMMARY OF FINDINGS — Attach site map showing sampling point locations, transects, important features, etc Hydrophytic Vegetation Present? Yes No X Is the Sampled Area within a Wetland? Yes No X Hydric Soil Present? Yes X No Wetland Hydrology Present? Yes X No Remarks: Data point paired with AR - A24U. Data point within the Western Mutual Ditch. The ditch is used primarily for irrigational purposes. VEGETATION — Use scientific names of plants. Absolute Dominant Indicator Tree Stratum (Plot size: 30 ) % Cover Species? Status Dominance Test worksheet: 1. Number of Dominant Species That 2. Are OBL, FACW, or FAC: (A) 3. Total Number of Dominant Species 4. Across All Strata: (B) =Total Cover Percent of Dominant Species That Saplinq/Shrub Stratum (Plot size: 15 ) Are OBL, FACW, or FAC: (A/B) 1. 2. Prevalence Index worksheet: 3. Total % Cover of: Multiply by: 4. OBL species x 1 = 5. FACW species x 2 = =Total Cover FAC species x 3 = Herb Stratum (Plot size: 5 ) FACU species x 4 = 1. UPL species x 5 = 2. Column Totals: (A) (B) 3. Prevalence Index = B/A = 4. 5. Hydrophytic Vegetation Indicators: 6. 1 - Rapid Test for Hydrophytic Vegetation 7. _ 2 - Dominance Test is >50% 8. _ 3 - Prevalence Index is 53.0' 9. _ - Morphological Adaptations' (Provide supporting 10. _4 data in Remarks or on a separate sheet) =Total Cover Problematic Hydrophytic Vegetation' (Explain) Woody Vine Stratum (Plot size: 5 ) _ 'Indicators of hydric soil and wetland hydrology must 1. be present, unless disturbed or problematic. 2. Hydrophytic =Total Cover Vegetation % Bare Ground in Herb Stratum 100 Present? Yes No X Remarks: Vegetation has been stripped from irrigational flows. No vegetation is present within the ditch. An OHWM is apparent throughout the ditch. NO. FORM 6116-c 1111 ?nIR G[pgt_Pioine 1/, rcinn .0 SOIL Sampling Point: AR - A24W Profile Description: (Describe to the depth needed to document the indicator or confirm the absence Depth Matrix Redox Features of indicators.) Remarks (inches) Color (moist) % Color (moist) % Type1 Loc2 Texture 0-3 7.5YR 3/2 100 3-8 10YR 4/3 70 10YR 5/8 30 CS M Sandy Sandy redox present from 5" 8-18 10YR 5/4 70 5YR 4/6 30 CS M Sandy Sandy redox present `Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2Location: PL=Pore Lining, M=Matrix. Hydric Soil Indicators: (Applicable to all LRRs, unless Histosol (Al) Histic Epipedon (A2) Black Histic (A3) Hydrogen Sulfide (A4) otherwise noted.) _ Sandy Gleyed Matrix (S4) (F16) H) Indicators for Problematic Hydric Soils3: 1 cm Muck (A9) (LRR I, J) Sandy Redox (S5) _ ___ Coast Prairie Redox (A16) (LRR F, G, H) _ Dark Surface (S7) (LRR G) High Plains Depressions (F16) _ X Stripped Matrix (S6) Loamy Mucky Mineral (F1) _Stratified Layers (A5) (LRR F) 1 cm Muck (A9) (LRR F, G, H) Depleted Below Dark Surface (A11) _ Loamy Gleyed Matrix (F2) _ (LRR H outside of MLRA 72 & 73) — Reduced Vedic (F18) _ _ Depleted Matrix (F3) Redox Dark Surface (F6) Red Parent Material (F21) _Thick Dark Surface (Al2) _Sandy Mucky Mineral (S1) _2.5 cm Mucky Peat or Peat (S2) (LRR G, H) 5 cm Mucky Peat or Peat (S3) (LRR F) _ _ Depleted Dark Surface (F7) _ Very Shallow Dark Surface (F22) _Redox Depressions (F8) _ Other (Explain in Remarks) High Plains Depressions _ 3lndicators of hydrophytic vegetation and wetland hydrology must be present, unless disturbed or problematic. _ (MLRA 72 & 73 of LRR Restrictive Layer (if observed): Type: Hydric Soil Present? Yes X No Depth (inches): Remarks: Hydric soil indicator S6 present. HYDROLOGY Wetland Hydrology Indicators: Primary Indicators (minimum of one is required; check all that apply) Secondary Indicators (minimum of two required) _Surface Water (Al) _ Salt Crust (B11) High Water Table (A2) Invertebrates (B13) Surface Soil Cracks (B6) _ X Sparsely Vegetated Concave Surface (B8) _Aquatic Saturation (A3) Hydrogen Sulfide Odor (C1) X Drainage Patterns (B10) Oxidized Rhizospheres on Living Roots (C3) _ X Water Marks (B1) _ Dry -Season Water Table (C2) Sediment Deposits (B2) Oxidized Rhizospheres on Living Roots _ (C3) (where tilled) Crayfish Burrows (C8) _ X Drift Deposits (B3) (where not tilled) Algal Mat or Crust (B4) Presence of Reduced Iron (C4) _ _Saturation Visible on Aerial Imagery (C9) X Geomorphic Position (D2) _ Iron Deposits (B5) _ Thin Muck Surface (C7) Inundation Visible on Aerial Imagery (B7) _ Other (Explain in Remarks) _ FAC-Neutral Test (D5) _ Water -Stained Leaves (B9) Frost -Heave Hummocks (D7) (LRR F) Field Observations: Surface Water Present? Yes No X Depth (inches): Wetland Hydrology Present? Yes X No Water Table Present? Yes No X Depth (inches): Saturation Present? Yes No X Depth (inches): (includes capillary fringe) Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: Remarks: Data point within the Western Mutual Ditch. The ditch exhibits primary indicators B1 and B3. Additionally, secondary indicators B8, B10 and D2. ItIG rORRA 8't16-5, JUL-2018 ne„q+ F]E,:nc 1./chrpinn U.S. Army Corps of Engineers WETLAND DETERMINATION DATA SHEET — Great Plains Region See ERDC/EL TR-10-1; the proponent agency is CECW-CO-R OMB Control #: 0710-0024, Exp: 11/30/2024 Requirement Control Symbol EXEMPT: (Authority: AR 335-15, paragraph 5-2a) Project/Site: Meining Property Applicant/Owner: J&T Consulting City/County: Gilcrest / Weld Investigator(s): T. Worley, N. Rothman Sampling Date: 11/6/2023 State: CO Sampling Point: AR - B1 U Section, Township, Range: 30, 4 North. 66 West Landform (hillside, terrace, etc.): Agricultural Field Local relief (concave, convex, none): None Subregion (LRR): LRR G, MLRA 67B Lat: 40.28751 °N Soil Map Unit Name: Julesburg sandy loam 0-1% slopes Slope (%): 0 Long: -104.8143 °W Datum: NAD83 NWI classification: None Are climatic / hydrologic conditions on the site typical for this time of year? Yes Y No (If no, explain in Remarks.) Are Vegetation N , Soil N , or Hydrology N significantly disturbed? Are "Normal Circumstances" present? Yes Y No Are Vegetation N , Soil N , or Hydrology N naturally problematic? (If needed, explain any answers in Remarks.) SUMMARY OF FINDINGS — Attach site map showing sampling point locations, transects, important features, etc Hydrophytic Vegetation Present? Yes No X Is the Sampled Area within a Wetland? Yes No X Hydric Soil Present? Yes No X Wetland Hydrology Present? Yes No X Remarks: Upland data point paired with AR - B1 W. Data point adjacent to irrigational pond that is filled by diverting water from the Western Mutual Ditch. No outlet is assoicated with AR - B, it is assumed an external pump is used to pump water from the pond for agricultural purposes. VEGETATION — Use scientific names of plants. Tree Stratum (Plot size: 30 ) Absolute % Cover Dominant Species? Indicator Status Dominance Test worksheet: Number of Dominant Species That Are OBL, FACW, or FAC: 0 (A) 1_ 2. 3. Total Number of Dominant Species Across All Strata: 2 (B) 4. Sapling/Shrub Stratum (Plot size: 15 ) =Total Cover Percent of Dominant Species That Are OBL, FACW, or FAC: 0.0% (A/B) 1. 2. Prevalence Index worksheet: Total % Cover of: Multiply by. 3. _ 4. OBL species 0 x 1 = 0 5. FACW species 0 x 2 = 0 Herb Stratum (Plot size: 5 ) =Total Cover Yes FACU FAC species 10 x 3 = 30 25 FACU species 50 x 4 = 200 1. Bessie scoparia UPL species 10 x 5 = 50 2. Salsola kali 15 Yes FACU Column Totals: 70 (A) 280 (B) 3. Bouteloua dactyloides 10 No FACU Prevalence Index = B/A = 4.00 4. Agropyron cristatum 10 No UPL 5. Rumex crispus 10 No FAC Hydrophytic Vegetation Indicators: _ 1 - Rapid Test for Hydrophytic Vegetation 2 - Dominance Test is >50% 6. 7. 8. _ _ 3 - Prevalence Index is ≤3.0' _4 - Morphological Adaptations' (Provide supporting data in Remarks or on a separate sheet) _ Problematic Hydrophytic Vegetation' (Explain) 'Indicators of hydric soil and wetland hydrology must be present, unless disturbed or problematic. 9. 10. Woody Vine Stratum (Plot size: 1 70 =Total Cover 1. 2. Hydrophytic Vegetation Present? Yes No X % Bare Ground in Herb Stratum 30 =Total Cover Remarks: Data point above irrigation pond. Nr; Fr]RM 8116-r, Jill 9n1R Great plairec-1/arcinn .0 SOIL Sampling Point: AR - B1 U Profile Description: (Describe to the depth needed to document the indicator or confirm the absence Depth Matrix Redox Features of indicators.) Remarks (inches) Color (moist) % Color (moist) % Type' Loc2 Texture 0-6 7.5YR 4/3 100 Sandy Gravelly sand 'Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2Location: PL=Pore Lining, M=Matrix. Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Histosol (Al) Sandy Gleyed Matrix (S4) (F16) H) Indicators for Problematic Hydric Soils3: 1 cm Muck (A9) (LRR I, J) Histic Epipedon (A2) _ Sandy Redox (S5) _ Coast Prairie Redox (A16) (LRR F, G, H) Black Histic (A3) _ Stripped Matrix (S6) _ Dark Surface (S7) (LRR G) Hydrogen Sulfide (A4) _ Loamy Mucky Mineral (F1) _ High Plains Depressions (F16) _Stratified Layers (A5) (LRR F) _1 cm Muck (A9) (LRR F, G, H) _ Loamy Gleyed Matrix (F2) _ (LRR H outside of MLRA 72 & 73) Reduced Vertic (F18) _ _ Depleted Matrix (F3) Redox Dark Surface (F6) Depleted Below Dark Surface (A11) _ Red Parent Material (F21) _Thick Dark Surface (Al2) _ Depleted Dark Surface (F7) _ Very Shallow Dark Surface (F22) _Sandy Mucky Mineral (S1) _ Redox Depressions (F8) _ Other (Explain in Remarks) _2.5 cm Mucky Peat or Peat (S2) (LRR G, H) 5 cm Mucky Peat or Peat (S3) (LRR F) _ _ High Plains Depressions _ 3lndicators of hydrophytic vegetation and wetland hydrology must be present, unless disturbed or problematic. (MLRA 72 & 73 of LRR Restrictive Layer (if observed): Type: Compaction Hydric Soil Present? Yes No X Depth (inches): 6 Remarks: Compaction from vehicle traffic. No hydric soil indicators. HYDROLOGY Wetland Hydrology Indicators: Primary Indicators (minimum of one is required; check all that apply) Secondary indicators (minimum of two required) _Surface Water (A1) _Salt Crust (B11) High Water Table (A2) Aquatic Invertebrates (B13) Surface Soil Cracks (B6) Concave Surface (B8) (B10) on Living Roots (C3) on Aerial Imagery (C9) (D2) (D7) (LRR F) _ Sparsely Vegetated _Saturation (A3) Hydrogen Sulfide Odor (C1) Drainage Patterns _ _ _Water Marks (B1) _ Dry -Season Water Table (C2) Oxidized Rhizospheres _Sediment Deposits (B2) _ Oxidized Rhizospheres on Living Roots Drift Deposits (B3) (where not tilled) _ (C3) (where tilled) _ Crayfish Burrows (C8) _ Saturation Visible _Geomorphic Position Algal Mat or Crust (B4) Presence of Reduced Iron (C4) _ _Iron Deposits (B5) _Thin Muck Surface (C7) Inundation Visible on Aerial Imagery (B7) _ Other (Explain in Remarks) FAC-Neutral Test (D5) _ _Water -Stained Leaves (B9) _ Frost -Heave Hummocks Field Observations: Surface Water Present? Yes No Depth (inches): Wetland Hydrology Present? Yes No X Water Table Present? Yes No Depth (inches): Saturation Present? Yes No Depth (inches): (includes capillary fringe) Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: Remarks: No wetland indicators. NG FOPµ8936-5,.JUL 2018 nr.,ai Plaint \ierck,n " 0 U.S. Army Corps of Engineers WETLAND DETERMINATION DATA SHEET — Great Plains Region See ERDC/EL TR-10-1; the proponent agency is CECW-CO-R OMB Control #: 0710-0024, Exp: 11/30/2024 Requirement Control Symbol EXEMPT: (Authority: AR 335-15, paragraph 5-2a) Project/Site: Meining Property Applicant/Owner: J&T Consulting City/County: Gilcrest / Weld Investigator(s): T. Worley, N. Rothman Landform (hillside, terrace, etc.): Irrigation Pond Subregion (LRR): LRR G, MLRA 67B Lat: 40.28757 °N Soil Map Unit Name: Juleburg sandy loam 0-1% slopes Sampling Date: 11/6/2023 State: CO Sampling Point: AR - B1W Section, Township, Range: 30, 4 North, 66 West Local relief (concave, convex, none): Concave Slope (%): 3 Long: -104.8142 °W Datum: NAD83 NWI classification: PABFx Are climatic / hydrologic conditions on the site typical for this time of year? Yes X No (If no, explain in Remarks.) Are Vegetation N , Soil N , or Hydrology N significantly disturbed? Are "Normal Circumstances" present? Yes Y No Are Vegetation N , Soil N , or Hydrology N naturally problematic? (If needed, explain any answers in Remarks.) SUMMARY OF FINDINGS — Attach site map showing sampling point locations, transects, important features, etc Hydrophytic Vegetation Present? Yes X No Is the Sampled Area within a Wetland? Yes X No - Hydric Soil Present? Yes X No Wetland Hydrology Present? Yes X No Remarks: Data point paired with AR - B1U. Data point within an irrigational pond that is filled by diverting water from the Western Mutual Ditch. No outlet is assoicated with AR - B, it is assumed an external pump is used to pump water from the pond for agricultural purposes. VEGETATION — Use scientific names of plants. Tree Siralum (Plot size: 30 ) Absolute % Cover Dominant Species? Indicator Status Dominance Test worksheet: Number of Dominant Species That Are OBL, FACW, or FAC: 1 (A) 1. 2. 3. Total Number of Dominant Species Across All Strata: 1 (B) 4. Sapling/Shrub Stratum (Plot size: 15 ) =Total Cover Percent of Dominant Species That Are OBL, FACW, or FAC: 100.0% (A/B) 1. 2. Prevalence Index worksheet: Total % Cover of: Multiply by: 3. 4. OBL species 0 x 1 = 0 5. FACW species 20 x 2 = 40 Herb Stratum (Plot size: 5 ) =Total Cover Yes FACW FAC species 0 x 3 = 0 20 FACU species 0 x 4 = 0 1. Polygonum pensylvanicum UPL species 0 x 5 = 0 2. Column Totals: 20 (A) 40 (B) 3. Prevalence Index = B/A = 2.00 4. 5. Hydrophytic Vegetation Indicators: 1 - Rapid Test for Hydrophytic Vegetation 6. 7. _ X 2 - Dominance Test is >50% 8. X 3 - Prevalence Index is ≤3.0' 9. _4 - Morphological Adaptations' (Provide supporting data in Remarks or on a separate sheet) Problematic Hydrophytic Vegetation' (Explain) 10. Woody Vine Stratum (Plot size: 5 ) 20 =Total Cover _ 'Indicators of hydric soil and wetland hydrology must be present, unless disturbed or problematic. 1. 2. Hydrophytic Vegetation Present? Yes X No % Bare Ground in Herb Stratum 80 =Total Cover Remarks: Data point within an irrigation pond. M(; F(1RM 8116-5, JUL 2018 araat Plaine — Varcinn 0 SOIL Sampling Point: AR - B1W Profile Description: (Describe to the depth needed to document the indicator or confirm the absence Depth Matrix Redox Features of indicators.) Remarks (inches) Color (moist) % Color (moist) % Type' Loc2 Texture 0-7 7.5YR 5/4 100 Sandy 7-18 7.5YR 5/4 50 10YR 5/8 50 CS M Sandy 18-21 10YR 3/1 70 10YR 5/8 30 CS M Sandy 'Type: C=Concentralion, D=Deplelion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2Location: PL=Pore Lining, M=Matrix. Hydric Soil Indicators: (Applicable to all LRRs, unless Histosol (Al) Histic Epipedon (A2) Black Histic (A3) Hydrogen Sulfide (A4) otherwise noted.) _ Sandy Gleyed Matrix (S4) (F16) H) Indicators for Problematic Hydric Soiis3: _ 1 cm Muck (A9) (LRR I, J) Coast Prairie Redox (A16) (LRR F, G, H) X Sandy Redox (S5) _ Stripped Matrix (S6) _ Dark Surface (S7) (LRR G) Mucky Mineral (F1) _ High Plains Depressions (F16) Stratified Layers (A5) (LRR F) 1 cm Muck (A9) (LRR F, G, H) Depleted Below Dark Surface (A11) _Loamy _ Loamy Gleyed Matrix (F2) Depleted Matrix (F3) _ (LRR H outside of MLRA 72 & 73) Reduced Vedic (F18) _ Redox Dark Surface (F6) _ Red Parent Material (F21) _Thick Dark Surface (Al2) _Sandy Mucky Mineral (S1) _ 2.5 cm Mucky Peat or Peat (S2) (LRR G, H) 5 cm Mucky Peat or Peat (S3) (LRR F) _ Depleted Dark Surface (F7) _ Very Shallow Dark Surface (F22) _ _Redox Depressions (F8) _ Other (Explain in Remarks) _ High Plains Depressions (MLRA 72 & 73 of LRR 3lndicators of hydrophytic vegetation and wetland hydrology must be present, unless disturbed or problematic. Restrictive Layer (if observed): Type: Hydric Soil Present? Yes X No Depth (inches): Remarks: Hydric soil indicator S5 present. HYDROLOGY Wetland Hydrology Indicators: Primary Indicators (minimum of one is required: check all that apply) Secondary Indicators (minimum of two required? X Surface Water (Al) _ Salt Crust (B11) High Water Table (A2) Aquatic Invertebrates (B13) Surface Soil Cracks (B6) _ X Sparsely Vegetated Concave Surface (B8) _ X Saturation (A3) Hydrogen Sulfide Odor (C1) _ Drainage Patterns (B10) _ Oxidized Rhizospheres on Living Roots (C3) (C3) (where tilled) Crayfish Burrows (C8) _ X Water Marks (B1) _ Dry -Season Water Table (C2) _ Sediment Deposits (B2) _ Oxidized Rhizospheres on Living Roots _ Drift Deposits (B3) (where not tilled) Algal Mat or Crust (B4) _ Presence of Reduced Iron (C4) _ Saturation Visible on Aerial Imagery (C9) Iron Deposits (B5) _ Thin Muck Surface (C7) Inundation Visible on Aerial Imagery (B7) _ Other (Explain in Remarks) Water -Stained Leaves (B9) _ X Geomorphic Position (D2) X FAC-Neutral Test (D5) _ Frost -Heave Hummocks (D7) (LRR F) Field Observations: Surface Water Present? Yes X No Depth (inches): 2 Wetland Hydrology Present? Yes X No Water Table Present? Yes No X Depth (inches): Saturation Present? Yes X No Depth (inches): 12 (includes capillary fringe) Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: Remarks: Surface water present with the pond. Pond showing signs of drying up after the growing season. Primary indicators Al, A3 and B1 present. Additionally, secondary indicators include B8, D2 and D5. uG FORM 6116-5 JUL 2418 nrnat PI&nc verei.,,, U.S. Army Corps of Engineers WETLAND DETERMINATION DATA SHEET — Great Plains Region See ERDC/EL TR-10-1; the proponent agency is CECW-CO-R OMB Control #: 0710-0024, Exp: 11/30/2024 Requirement Control Symbol EXEMPT: (Authority: AR 335-15, paragraph 5-2a) Project/Site: Meining Property Applicant/Owner: J&T Consulting City/County: Gilcrest / Weld Investigator(s): T. Worley. N. Rothman Sampling Date: 11/6/2023 State: CO Sampling Point: AR - Cl U Section, Township, Range: 30. 4 North, 66 West Landform (hillside, terrace, etc.): Agricultural Field Local relief (concave, convex, none): None Subregion (LRR): LRR G, MLRA 67B Lat: 40.28786 °N Soil Map Unit Name: Julesburg sandy loam 0-1% slopes Slope (%): 0 Long: -104.8143 °W Datum: NAD83 NWI classification: None Are climatic / hydrologic conditions on the site typical for this time of year? Yes Y No (If no, explain in Remarks.) Are Vegetation N , Soil N , or Hydrology N significantly disturbed? Are "Normal Circumstances" present? Yes Y No Are Vegetation N , Soil N , or Hydrology N naturally problematic? (If needed, explain any answers in Remarks.) SUMMARY OF FINDINGS — Attach site map showing sampling point locations, transects, important features, etc Hydrophytic Vegetation Present? Yes No X Is the Sampled Area within a Wetland? Yes No X Hydric Soil Present? Yes No X Wetland Hydrology Present? Yes No X Remarks: Upland data point paired with AR - Cl W. Data point adjacent to irrigational pond that is filled by diverting water from the Western Mutual Ditch. No outlet is assoicated with AR - B, it is assumed an external pump is used to pump water from the pond for agricultural purposes. VEGETATION — Use scientific names of plants. Tree Stratum (Plot size: 30 ) Absolute % Cover Dominant Species? Indicator Status Dominance Test worksheet: Number of Dominant Species That Are OBL, FACW, or FAC: 0 (A) 1. 2. 3. Total Number of Dominant Species Across All Strata: 2 (B) 4. Sapling/Shrub Stratum (Plot size: 15 ) =Total Cover Percent of Dominant Species That Are OBL, FACW, or FAC: 0.0% (A/B) 1. 2. Prevalence Index worksheet: Total % Cover of: Multiply by: 3. 4. OBL species 0 x 1 = 0 5. FACW species 0 x 2 = 0 Herb Stratum (Plot size: 5 ) =Total Cover Yes FACU FAC species 10 x 3 = 30 25 FACU species 50 x 4 = 200 1. Bassia scoparia UPL species 10 x 5 = 50 2. Salsola kali 15 Yes FACU Column Totals: 70 (A) 280 (B) 3. Bouteloua dactyloides 10 No FACU Prevalence Index = B/A = 4.00 4. Agropyron cristatum 10 No UPL 5. Rumex crispus 10 No FAC Hydrophytic Vegetation Indicators: 1 - Rapid Test for Hydrophytic Vegetation 6. 7. _ 2 - Dominance Test is >50% 8. T 3 - Prevalence Index is ≤3.0' _4 - Morphological Adaptations' (Provide supporting data in Remarks or on a separate sheet) Problematic Hydrophytic Vegetation' (Explain) 9. 10. Woody Vine Stratum (Plot size: ) 70 =Total Cover _ 'Indicators of hydric soil and wetland hydrology must be present, unless disturbed or problematic. 1. 2. Hydrophytic Vegetation Present? Yes No X % Bare Ground in Herb Stratum 30 =Total Cover Remarks: Data point above irrigation pond. N1; FORM 5116, JUL 201fZ Gr.eat Plains.... i/ar¢inn .0 SOIL Sampling Point: AR - Cl U Profile Description: (Describe to the depth needed to document the indicator or confirm the absence Depth Matrix Redox Features of indicators.) Remarks (inches) Color (moist) % Color (moist) % Type Loc2 Texture 0-6 7.5YR 4/3 100 Sandy Gravelly sand 'Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2Location: PL=Pore Lining, M=Matrix. Hydric Soil Indicators: (Applicable to all LRRs, unless Histosol (Al) Histic Epipedon (A2) Black Histic (A3) otherwise noted.) _ Sandy Gleyed Matrix (S4) (F16) H) Indicators for Problematic Hydric Soils3: 1 cm Muck (A9) (LRR I, J) _ Sandy Redox (S5) _ _ Coast Prairie Redox (A16) (LRR F, G, H) Dark Surface (S7) (LRR G) _ Stripped Matrix (S6) Loamy Mucky Mineral (F1) Hydrogen Sulfide (A4) _ High Plains Depressions (F16) Stratified Layers (A5) (LRR F) _ Loamy Gleyed Matrix (F2) _ (LRR H outside of MLRA 72 & 73) _ Reduced Vertic (F18) Red Parent Material (F21) 1 cm Muck (A9) (LRR F, G, H) _ Depleted Matrix (F3) Depleted Below Dark Surface (All) _ Redox Dark Surface (F6) _Thick Dark Surface (Al2) _ _ Depleted Dark Surface (F7) _ Very Shallow Dark Surface (F22) _Sandy Mucky Mineral (S1) Depressions (F8) _ Other (Explain in Remarks) 3lndicators of hydrophytic vegetation and wetland hydrology must be present, unless disturbed or problematic. 2.5 cm Mucky Peat or Peat (S2) (LRR G, H) _Redox High Plains Depressions 5 cm Mucky Peat or Peat (S3) (LRR F) _ (MLRA 72 & 73 of LRR Restrictive Layer (if observed): Type: Compaction Hydric Soil Present? Yes No X Depth (inches): 6 Remarks: Compaction from vehicle traffic. No hydric soil indicators. HYDROLOGY Wetland Hydrology Indicators: Primary Indicators (minimum of one is required; check all that apply) Secondary Indicators (minimum of Iwo required) Water (A1) Salt Crust (B11) _ Surface Soil Cracks Sparsely Vegetated (B6) Concave Surface (B8) (B10) on Living Roots (C3) on Aerial Imagery (C9) (D2) (D7) (LRR F) _Surface _ High Water Table (A2) Invertebrates (B13) _Aquatic _Saturation (A3) _ Hydrogen Sulfide Odor (C1) Drainage Patterns _ _Water Marks (B1) _ Dry -Season Water Table (C2) Rhizospheres Sediment Deposits (B2) Oxidized Rhizospheres on Living Roots — _Oxidized (C3) (where tilled) Crayfish Burrows (C8) Drift Deposits (B3) (where not tilled) _ Algal Mat or Crust (B4) Presence of Reduced Iron (C4) Saturation Visible _ _ _Iron Deposits (B5) _ Thin Muck Surface (C7) Geomorphic Position _ _Inundation Visible on Aerial Imagery (B7) _ Other (Explain in Remarks) FAC-Neutral Test (D5) _ Water -Stained Leaves (B9) _ Frost -Heave Hummocks Field Observations: Surface Water Present? Yes No Depth (inches): Wetland Hydrology Present? Yes No X Water Table Present? Yes No Depth (inches): Saturation Present? Yes No Depth (inches): (includes capillary fringe) Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: Remarks: No wetland indicators. ma FARRA6146_c, III' 9018 Brant pi a.,c lrarcinn =.0 U.S. Army Corps of Engineers WETLAND DETERMINATION DATA SHEET — Great Plains Region See ERDC/EL TR-10-1; the proponent agency is CECW-CO-R OMB Control #: 0710-0024, Exp: 11/30/2024 Requirement Control Symbol EXEMPT: (Authority: AR 335-15, paragraph 5-2a) Project/Site: Meining Property Applicant/Owner: J&T Consulting City/County: Gilcrest / Weld lnvestigator(s): T. Worley, N. Rothman Landform (hillside, terrace, etc.): Irrigation Pond Subregion (LRR): LRR G, MLRA 67B Lat: 40.28786 °N Soil Map Unit Name: Juleburg sandy loam 0-1% slopes Sampling Date: 11/612023 State: CO Sampling Point: AR - Cl W Section, Township, Range: 30. 4 North, 66 West Local relief (concave, convex, none): Concave Slope (%): 3 Long: -104.8142 °W Datum: NAD83 NWI classification: PABFx Are climatic / hydrologic conditions on the site typical for this time of year? Yes X No (If no, explain in Remarks.) Are Vegetation N , Soil N , or Hydrology N significantly disturbed? Are "Normal Circumstances" present? Yes Y No Are Vegetation N , Soil N , or Hydrology N naturally problematic? (If needed, explain any answers in Remarks.) SUMMARY OF FINDINGS — Attach site map showing sampling point locations, transects, important features, etc Hydrophytic Vegetation Present? Yes X No Is the Sampled Area within a Wetland? Yes X No - Hydric Soil Present? Yes X No - Wetland Hydrology Present? Yes X No Remarks: Data point paired with AR - Cl U. Data point within an irrigational pond that is filled by diverting water from the Western Mutual Ditch. No outlet is assoicated with AR - B, it is assumed an external pump is used to pump water from the pond for agricultural purposes. VEGETATION — Use scientific names of plants. Tree Stratum (Plot size: 30 ) Absolute % Cover Dominant Species? Indicator Status Dominance Test worksheet: Number of Dominant Species That Are OBL, FACW, or FAC: 1 (A) 1. 2. 3. Total Number of Dominant Species Across All Strata: 1 (B) 4. Sapling/Shrub Stratum (Plot size: 15 ) =Total Cover Percent of Dominant Species That Are OBL, FACW, or FAC: 100.0% (A/B) 1. 2. Prevalence Index worksheet: Total % Cover of: Multiply by: 3. 4. OBL species 0 x 1 = 0 5. FACW species 20 x 2 = 40 Herb Stratum (Plot size: 5 ) =Total Cover Yes FACW FAC species 0 x 3 = 0 20 FACU species 0 x 4 = 0 1. Polygonum pensylvanicum UPL species 0 x 5 = 0 2. Column Totals: 20 (A) 40 (B) 3. Prevalence Index = B/A = 2.00 4. 5. Hydrophytic Vegetation Indicators: 1 - Rapid Test for Hydrophytic Vegetation 6. 7. _ X 2 - Dominance Test is >50% X 3 - Prevalence Index is 53.01 8. 9. - Morphological Adaptations' (Provide supporting 10. _4 data in Remarks or on a separate sheet) Hydrophytic Vegetation' (Explain) Woody Vine Stratum (Plot size: 5 ) 20 =Total Cover _Problematic ' Indicators of hydric soil and wetland hydrology must be present, unless disturbed or problematic. 1. 2. Hydrophytic Vegetation Present? Yes X No % Bare Ground in Herb Stratum 80 =Total Cover Remarks: Data point within an irrigation pond. F11[R Fr1RM A 4 1A. 5 _fill 9n1A Great Plainc _ \/=rcir n ) 0 SOIL Sampling Point: AR - C1 W Profile Description: (Describe to the depth needed to document the indicator or confirm the absence Depth Matrix Redox Features of indicators.) Remarks (inches) Color (moist) % Color (moist) % Type' Loc2 Texture 0-7 7.5YR 5/4 100 Sandy 7-18 7.5YR 5/4 50 10YR 5/8 50 CS M Sandy 18-21 10YR 3/1 70 10YR 5/8 30 CS M Sandy 'Type: C=Concentration, C=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2Location: PL=Pore Lining, M=Matrix. Hydric Soil Indicators: (Applicable to all LRRs, unless Histosol (A1) otherwise noted.) _ Sandy Gleyed Matrix (S4) X Sandy Redox (S5) (F16) H) Indicators for Problematic Hydric Soils3: _ 1 cm Muck (A9) (LRR I, J) Coast Prairie Redox (A16) (LRR F, G, H) Histic Epipedon (A2) _Black Histic (A3) Hydrogen Sulfide (A4) _ Stripped Matrix (S6) _Loamy Mucky Mineral (F1) Loamy Gleyed Matrix (F2) _ _ Dark Surface (S7) (LRR G) High Plains Depressions (F16) _Stratified Layers (A5) (LRR F) _1 cm Muck (A9) (LRR F, G, H) Depleted Below Dark Surface (A11) (LRR H outside of MLRA 72 & 73) Reduced Vedic (F18) _ _ Depleted Matrix (F3) Redox Dark Surface (F6) _ Red Parent Material (F21) _Thick Dark Surface (Al2) _ Depleted Dark Surface (F7) _ _ Very Shallow Dark Surface (F22) Other (Explain in Remarks) _Sandy Mucky Mineral (S1) _2.5 cm Mucky Peat or Peat (S2) (LRR G, H) _5 cm Mucky Peat or Peat (S3) (LRR F) _ _ Redox Depressions (F8) High Plains Depressions 3lndicators of hydrophytic vegetation and wetland hydrology must be present, unless disturbed or problematic. _ (MLRA 72 & 73 of LRR Restrictive Layer (if observed): Type: Hydric Soil Present? Yes X No Depth (inches): Remarks: Hydric soil indicator S5 present. HYDROLOGY Wetland Hydrology Indicators: Primary Indicators (minimum of one is required; check all that apply) Secondary Indicators (minimum of two required) X Surface Water (Al) Crust (B11) Surface Soil Cracks (B6) _Salt _ High Water Table (A2) Aquatic Invertebrates (B13) X Sparsely Vegetated Concave Surface (B8) X Saturation (A3) Hydrogen Sulfide Odor (C1) _ Drainage Patterns (B10) Oxidized Rhizospheres on Living Roots (C3) _ X Water Marks (B1) Dry -Season Water Table (C2) Deposits (B2) Oxidized Rhizospheres on Living Roots _ (C3) (where tilled) Crayfish Burrows (C8) _Sediment _ Drift Deposits (B3) (where not tilled) Algal Mat or Crust (B4) _Presence of Reduced Iron (C4) _ Saturation Visible on Aerial Imagery (C9) _ Iron Deposits (B5) _Thin Muck Surface (C7) X Geomorphic Position (D2) _Inundation Visible on Aerial Imagery (B7) _ Other (Explain in Remarks) _ Water -Stained Leaves (B9) X FAC-Neutral Test (D5) _ Frost -Heave Hummocks (D7) (LRR F) Field Observations: Surface Water Present? Yes X No Depth (inches): 2 Wetland Hydrology Present? Yes X No Water Table Present? Yes No X Depth (inches): Saturation Present? Yes X No Depth (inches): 12 - (includes capillary fringe) Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: Remarks: Surface water present with the pond. Pond showing signs of drying up after the growing season. Primary indicators Al, A3 and B1 present. Additionally, secondary indicators include B8, D2 and D5. Nn FORM 6116-rs JUL 20.18 G_rea' Plolnr \o-,rrc,,n 0 U.S. Army Corps of Engineers WETLAND DETERMINATION DATA SHEET — Great Plains Region See ERDC/EL TR-10-1; the proponent agency is CECW-CO-R OMB Control #: 0710-0024, Exp: 11/30/2024 Requirement Control Symbol EXEMPT: (Authority: AR 335-15, paragraph 5-2a) Project/Site: Meining Property Applicant/Owner: J&T Consultants City/County: Grilcrest / Weld Investigator(s): T. Worley, N. Rothman Sampling Date: 11/6/2023 State: CO Sampling Point: UP1 Section, Township, Range: 30.4 North, 66 West Landform (hillside, terrace, etc.): Agricultural field Local relief (concave, convex, none): None Subregion (LRR): LRR G, MLRA 67B Lat: 40.28833 °N Soil Map Unit Name: Julesburg sandy loam 0-1% slopes Slope (%): 0 Long: -104.8125 °W Datum: NAD83 NWI classification: None Are climatic / hydrologic conditions on the site typical for this time of year? Yes No (If no, explain in Remarks.) Are Vegetation N , Soil N , or Hydrology N significantly disturbed? Are "Normal Circumstances" present? Yes Y No Are Vegetation N , Soil N , or Hydrology N naturally problematic? (If needed, explain any answers in Remarks.) SUMMARY OF FINDINGS — Attach site map showing sampling point locations, transects, important features, etc Hydrophytic Vegetation Present? Yes No X Is the Sampled Area within a Wetland? Yes No X Hydric Soil Present? Yes No X Wetland Hydrology Present? Yes No X Remarks: Upland data point in agricultural field in the northeast corner of the property. VEGETATION — Use scientific names of plants. Absolute Tree Stratum (Plot size: 30 ) % Cover Dominant Species? Indicator Status Dominance Test worksheet: Number of Dominant Species That Are OBL, FACW, or FAC: 0 (A) 1. 2. 3. ._Total Number of Dominant Species Across All Strata: 1 (B) 4. =Total Cover Percent of Dominant Species That Are OBL, FACW, or FAC: 0.0% (A/B) Saolina/Shrub Stratum (Plot size: 15 ) 1. 2. Prevalence Index worksheet: Total % Cover of: Multiply by: 3. 4. OBL species 0 x 1 = 0 5. FACW species 0 x 2 0 =Total Cover Yes UPL FAC species 0 x 3 = 0 Herb Stratum (Plot size: 5 ) 50 FACU species 0 x 4 = 0 1. Zea mays UPL species 50 x 5 = 250 2. Column Totals: 50 (A) 250 (B) 3. Prevalence Index = B/A = 5.00 4. 5. Hydrophytic Vegetation Indicators: 1 - Rapid Test for Hydrophytic Vegetation 6. 7. _ _ 2 - Dominance Test is >50% 3 - Prevalence Index is 53.01 8. 9. _ _4 - Morphological Adaptations' (Provide supporting data in Remarks or on a separate sheet) Problematic Hydrophytic Vegetation' (Explain) 10, 50 =Total Cover Woody Vine Stratum (Plot size: 5 ) _ 'Indicators of hydric soil and wetland hydrology must be present, unless disturbed or problematic. 1. 2. Hydrophytic Vegetation Present? Yes No X =Total Cover % Bare Ground in Herb Stratum 50 Remarks: Data point in corn field. Field has been recently harvested. FNO FORM R11R-c, .1111 9r11R r.raat Plains_., Vrarcinn 0 SOIL Sampling Point: UP1 Profile Description: (Describe to the depth needed to document the indicator or confirm the absence Depth Matrix Redox Features of indicators.) Remarks (inches) Color (moist) % Color (moist) % Type Loc2 Texture 0-18 10YR 4/3 100 'Type: C=Concentration, D=Depletion. RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2Location: PL=Pore Lining, M=Matrix. Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Histosol (Al) Sandy Gleyed Matrix (S4) (F16) H) Indicators for Problematic Hydric Soils: 1 cm Muck (A9) (LRR I, J) Histic Epipedon (A2) _ Sandy Redox (S5) _ Coast Prairie Redox (A16) (LRR F, G, H) Black Histic (A3) _ Stripped Matrix (S6) _ Dark Surface (S7) (LRR G) Hydrogen Sulfide (A4) _ Loamy Mucky Mineral (F1) _ High Plains Depressions (F16) _Stratified Layers (A5) (LRR F) _ Loamy Gleyed Matrix (F2) _ (LRR H outside of MLRA 72 & 73) Reduced Vertic (F18) _1 cm Muck (A9) (LRR F, G, H) _ Depleted Matrix (F3) Depleted Below Dark Surface (A11) _ Dark Surface (F6) _ _ Red Parent Material (F21) Very Shallow Dark Surface (F22) _Thick Dark Surface (Al2) _Redox Depleted Dark Surface (F7) _Sandy Mucky Mineral (S1) _ Redox Depressions (F8) _ Other (Explain in Remarks) _2.5 cm Mucky Peat or Peat (S2) (LRR G, H) _ High Plains Depressions _ 3lndicators of hydrophytic vegetation and wetland hydrology must be present, unless disturbed or probtemalic. cm Mucky Peat or Peat (S3) (LRR F) _ (MLRA 72 & 73 of LRR _5 Restrictive Layer (if observed): Type' Hydric Soil Present? Yes No X Depth (inches): Remarks: No hydric soil indicators. HYDROLOGY Wetland Hydrology Indicators: Primary Indicators (minimum of one is required. check all that apply) Secondary indicators (minimum of two required) _Surface Water (Al) _Salt Crust (B11) High Water Table (A2) Aquatic Invertebrates (B13) Surface Soil Cracks (B6) Concave Surface (B8) (B10) on Living Roots (C3) on Aerial Imagery (C9) (D2) (D7) (LRR F) _ Sparsely Vegetated _ _Saturation (A3) Hydrogen Sulfide Odor (C1) _ _ Drainage Patterns Oxidized Rhizospheres _Water Marks (B1) _ Dry -Season Water Table (C2) Sediment Deposits (B2) Oxidized Rhizospheres on Living Roots _ (C3) (where tilled) _ Crayfish Burrows (C8) Saturation Visible _ Drift Deposits (B3) (where not tilled) Algal Mat or Crust (B4) _Presence of Reduced Iron (C4) _Iron Deposits (B5) Muck Surface (C7) _ _Geomorphic Position _ FAC-Neutral Test (D5) _ Frost -Heave Hummocks _Thin Inundation Visible on Aerial Imagery (B7) Other (Explain in Remarks) _ — Water -Stained Leaves (B9) Field Observations: Surface Water Present? Yes No X Depth (inches): Wetland Hydrology Present? Yes No X Water Table Present? Yes No X Depth (inches): Saturation Present? Yes No X Depth (inches): (includes capillary fringe) Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: Remarks: No wetland indicators. .Eilla MeatAi16-., JUL 2(118 nra,r ❑Nine vorei.,., U.S. Army Corps of Engineers WETLAND DETERMINATION DATA SHEET — Great Plains Region See ERDC/EL TR-10-1; the proponent agency is CECW-CO-R OMB Control #: 0710-0024, Exp: 11/30/2024 Requirement Control Symbol EXEMPT: (Authority: AR 335-15, paragraph 5-2a) Project/Site: Meining Property Applicant/Owner: J&T Consultants City/County: Grilcrest / Weld Investigator(s):T. Worley, N. Rothman Sampling Date: 11/6/2023 State: CO Sampling Point: UP2 Section, Township, Range: 30, 4 North, 66 West Landform (hillside, terrace, etc.): Agricultural field Local relief (concave, convex, none): None Subregion (LRR): LRR G, MLRA 67B Lat: 40.28395 °N Long: -104.8142 °W Soil Map Unit Name: Julesburg sandy loam 0-1% slopes Slope (%): 0 Datum: NAD83 NWI classification: None Are climatic / hydrologic conditions on the site typical for this time of year? Yes No (If no, explain in Remarks.) Are Vegetation N , Soil N , or Hydrology N significantly disturbed? Are "Normal Circumstances" present? Yes Y No Are Vegetation N , Soil N , or Hydrology N naturally problematic? (If needed, explain any answers in Remarks.) SUMMARY OF FINDINGS — Attach site map showing sampling point locations, transects, important features, etc Hydrophytic Vegetation Present? Yes No X Is the Sampled Area within a Wetland? Yes No X Hydric Soil Present? Yes No X Wetland Hydrology Present? Yes No X Remarks: Upland data point in agricultural field in the southeast corner of the property. VEGETATION — Use scientific names of plants. Absolute Tree Stratum (Plot size: 30 ) % Cover Dominant Species? Indicator Status Dominance Test worksheet: Number of Dominant Species That Are OBL, FACW, or FAC: 0 (A) 1. 2. 3. Total Number of Dominant Species Across All Strata: 1 (B) 4. =Total Cover Percent of Dominant Species That Are OBL, FACW, or FAC: 0.0% (A/B) Sapling/Shrub Stratum (Plot size: 15 ) 1. 2. Prevalence Index worksheet: Total % Cover of: Multiply by: 3. 4. OBL species 0 x 1 = 0 5. FACW species 0 x 2 = 0 =Total Cover Yes UPL FAC species 0 x 3 = 0 Herb Stratum (Plot size: 5 ) 50 FACU species 0 x 4 = 0 1. Zea mays UPL species 50 x 5 = 250 2. Column Totals: 50 (A) 250 (B) 3. Prevalence Index = B/A = 5.00 4. 5. Hydrophytic Vegetation Indicators: 1 - Rapid Test for Hydrophytic Vegetation 6. 7. �,__..2 - Dominance Test is >50% _ 3 - Prevalence Index is ≤3.0' - Morphological Adaptations' (Provide supporting 8. 9. 10. _4 data in Remarks or on a separate sheet) _ Problematic Hydrophytic Vegetation' (Explain) 'Indicators of hydric soil and wetland hydrology must be present, unless disturbed or problematic. 50 =Total Cover Woody Vine Stratum (Plot size: 5 ) 1 • 2. Hydrophytic Vegetation Present? Yes No X =Total Cover % Bare Ground in Herb Stratum 50 Remarks: Data point in corn field. Field has been recently harvested. FMr; Fr1RIU 6116-c,.jjl1 9fl1R Great plaint — Varcinn .0 SOIL Sampling Point: UP2 Profile Description: (Describe to the depth needed to document the indicator or confirm the absence Depth Matrix Redox Features of indicators.) Remarks (inches) Color (moist) % Color (moist) % Type1 Loc2 Texture 0-18 10YR 4/3 100 'Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2Location: PL=Pore Lining, M=Matrix. Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Histosol (A1) Sandy Gleyed Matrix (S4) (F16) H) Indicators for Problematic Hydric Soils3: 1 cm Muck (A9) (LRR I, J) Histic Epipedon (A2) _ _Sandy Redox (S5) Stripped Matrix (S6) _ _ Coast Prairie Redox (A16) (LRR F, G, H) — Dark Surface (S7) (LRR G) High Plains Depressions (F16) _Black Histic (A3) Hydrogen Sulfide (A4) _ _ Loamy Mucky Mineral (F1) Loamy Gleyed Matrix (F2) _Stratified Layers (A5) (LRR F) _1 cm Muck (A9) (LRR F, G, H) _ (LRR H outside of MLRA 72 & 73) _ Reduced Vertic (F18) Red Parent Material (F21) _ Depleted Matrix (F3) Depleted Below Dark Surface (A11) _ Redox Dark Surface (F6) _Thick Dark Surface (Al2) _ Depleted Dark Surface (F7) _ Very Shallow Dark Surface (F22) _Sandy Mucky Mineral (S1) _2.5 cm Mucky Peat or Peat (S2) (LRR G, H) _ _ Redox Depressions (F8) High Plains Depressions _ Other (Explain in Remarks) _ 3lndicators of hydrophytic vegetation and wetland hydrology must be present, unless disturbed or problematic. cm Mucky Peat or Peat (S3) (LRR F) _ (MLRA 72 & 73 of LRR _5 Restrictive Layer (if observed): Type: Hydric Soil Present? Yes No X Depth (inches): Remarks: No hydric soil indicators. HYDROLOGY Wetland Hydrology Indicators: Primary Indicators (minimum of one is required; check all that apply) Secondary Indicators {minimum of Iwo required _Surface Water (A1) Crust (B11) Soil Cracks (B6) Concave Surface (B8) (B10) on Living Roots (C3) on Aerial Imagery (C9) (D2) (D5) (D7) (LRR F) _Salt _Surface High Water Table (A2) Aquatic Invertebrates (B13) Sparsely Vegetated _ _Saturation (A3) Hydrogen Sulfide Odor (C1) _ _ Drainage Patterns Rhizospheres _ _Water Marks (B1) Dry -Season Water Table (C2) Deposits (B2) Oxidized Rhizospheres on Living Roots _Oxidized (C3) (where tilled) Crayfish Burrows (C8) _Sediment _ Drift Deposits (B3) (where not tilled) _ Algal Mat or Crust (B4) Presence of Reduced Iron (C4) Saturation Visible _ _Iron Deposits (B5) _Thin Muck Surface (C7) Inundation Visible on Aerial Imagery (B7) Other (Explain in Remarks) _ Position _Geomorphic FAC-Neutral Test _ _ Water -Stained Leaves (B9) _ _ Frost -Heave Hummocks Field Observations: Surface Water Present? Yes No X Depth (inches): Wetland Hydrology Present? Yes No X Water Table Present? Yes No X Depth (inches): Saturation Present? Yes No X Depth (inches): (includes capillary fringe) Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: Remarks: No wetland indicators. uG cnpne Ai IRA., JVl 2018 Gros PhjL %/nrcinn U.S. Army Corps of Engineers WETLAND DETERMINATION DATA SHEET — Great Plains Region See ERDC/EL TR-10-1; the proponent agency is CECW-CO-R OMB Control #: 0710-0024, Exp: 11/30/2024 Requirement Control Symbol EXEMPT: (Authority: AR 335-15, paragraph 5-2a) Project/Site: Meining Property Applicant/Owner: J&T Consultants City/County: Grilcrest / Weld Investigator(s): T. Worley, N. Rothman Sampling Date: 11/6/2023 State: CO Sampling Point: UP3 Section, Township, Range: 30, 4 North. 66 West Landform (hillside, terrace, etc.): Agricultural field Local relief (concave, convex, none): None Subregion (LRR): LRR G, MLRA 67B Lat: 40.28551 °N Soil Map Unit Name: Ascalon loam, 0-1% slopes Slope (%): 0 Long: -104.8195 °W Datum: NAD83 NWI classification: None Are climatic / hydrologic conditions on the site typical for this time of year? Yes No (If no, explain in Remarks.) Are Vegetation N , Soil N , or Hydrology N significantly disturbed? Are "Normal Circumstances" present? Yes Y No Are Vegetation N , Soil N , or Hydrology N naturally problematic? (If needed, explain any answers in Remarks.) SUMMARY OF FINDINGS — Attach site map showing sampling point locations, transects, important features, etc Hydrophytic Vegetation Present? Yes No X Is the Sampled Area within a Wetland? Yes No X Hydric Soil Present? Yes No X Wetland Hydrology Present? Yes No X Remarks: Upland data point in agricultural field in the southwest corner of the property. VEGETATION — Use scientific names of plants. Absolute Tree Stratum (Plot size: 30 ) % Cover Dominant Species? Indicator Status Dominance Test worksheet: Number of Dominant Species That Are OBL, FACW, or FAC: 0 (A) 1. 2. 3. _ _ Total Number of Dominant Species Across All Strata: 1 (B) 4. =Total Cover Percent of Dominant Species That Are OBL, FACW, or FAC: 0.0% (A/B) SaplinQIShrub Stratum (Plot size: 15 ) 1. 2. Prevalence Index worksheet: Total % Cover of: Multiply by: 3. 4. OBL species 0 x 1 = 0 5. FACW species 0 x 2 = 0 =Total Cover Yes UPL FAC species 0 x 3 = 0 Herb Stratum (Plot size: 5 ) 50 FACU species 0 x 4 = 0 1. Zea mays UPL species 50 x 5 = 250 2. Column Totals: 50 (A) 250 (B) 3. Prevalence Index = B/A = 5.00 4. 5. Hydrophytic Vegetation Indicators: 1 - Rapid Test for Hydrophytic Vegetation 6. 7. _ 2 - Dominance Test is >50% 8. _ _ _ 3 - Prevalence Index is ≤3.0' - Morphological Adaptations' (Provide supporting 9. 10. _4 data in Remarks or on a separate sheet) Problematic Hydrophytic Vegetation' (Explain) 50 =Total Cover Woody Vine Stratum (Plot size: 5 ) _ 'Indicators of hydric soil and wetland hydrology must be present, unless disturbed or problematic. 1. 2. Hydrophytic Vegetation Present? Yes No X =Total Cover % Bare Ground in Herb Stratum 50 Remarks: Data point in corn field. Field has been recently harvested. N(; FARM Al 'MA, .1111 9n4St (;roar Pining.. \/arcinn 0 SOIL Sampling Point: UP3 Profile Description: (Describe to the depth needed to document the indicator or confirm the absence Depth Matrix Redox Features of indicators.) Remarks (inches) Color (moist) % Color (moist) % Type' Loc2 Texture 0-18 10YR 4/3 100 'Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2Location: PL=Pore Lining, M=Matrix. Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Histosol (Al) Sandy Gleyed Matrix (S4) (F16) H) Indicators for Problematic Hydric Soils3: 1 cm Muck (A9) (LRR I, J) Histic Epipedon (A2) _ _Sandy Redox (S5) Stripped Matrix (S6) _ Coast Prairie Redox (A16) (LRR F, G, H) Black Histic (A3) _ Dark Surface (S7) (LRR G) Hydrogen Sulfide (A4) _ Loamy Mucky Mineral (F1) _ High Plains Depressions (F16) Layers (A5) (LRR F) _ _ Loamy Gleyed Matrix (F2) Depleted Matrix (F3) _ (LRR H outside of MLRA 72 & 73) Reduced Vertic (F18) _Stratified _1 cm Muck (A9) (LRR F, G, H) Depleted Below Dark Surface (A11) _ _Redox Dark Surface (F6) _ Depleted Dark Surface (F7) _ Red Parent Material (F21) _Thick Dark Surface (Al2) _ Very Shallow Dark Surface (F22) _Sandy Mucky Mineral (S1) _ Redox Depressions (F8) _ High Plains Depressions (MLRA 72 & 73 of LRR _ Other (Explain in Remarks) cm Mucky Peat or Peat (S2) (LRR G, H) _ 3lndicators of hydrophytic vegetation and wetland hydrology must be present, unless disturbed or problematic. _2.5 5 cm Mucky Peat or Peat (S3) (LRR F) Restrictive Layer (if observed): Type: Hydric Soil Present? Yes No X Depth (inches): Remarks: No hydric soil indicators. HYDROLOGY Wetland Hydrology Indicators: Primary Indicators (minimum of one is required; check all that apply) Surface Water (A1) Salt Crust (B11) High Water Table (A2) Aquatic Invertebrates (B13) Saturation (A3) Water Marks (B1) _ Sediment Deposits (B2) _ Drift Deposits (B3) Algal Mat or Crust (B4) Iron Deposits (B5) Inundation Visible on Aerial Imagery (B7) Water -Stained Leaves (B9) Hydrogen Sulfide Odor (C1) Dry -Season Water Table (C2) Oxidized Rhizospheres on Living Roots (C3) (where not tilled) Presence of Reduced Iron (C4) Thin Muck Surface (C7) Other (Explain in Remarks) Secondary Indicators (minimum of two required). Surface Soil Cracks (B6) Sparsely Vegetated Concave Surface (B8) Drainage Patterns (B10) Oxidized Rhizospheres on Living Roots (C3) (where tilled) _ Crayfish Burrows (C8) _Saturation Visible on Aerial Imagery (C9) Geomorphic Position (D2) FAC-Neutral Test (D5) Frost -Heave Hummocks (D7) (LRR F) Field Observations: Surface Water Present? Water Table Present? Saturation Present? (includes capillary fringe) Yes Yes Yes No X No X No X Depth (inches): Depth (inches): Depth (inches): Wetland Hydrology Present? Yes No X Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: Remarks: No wetland indicators. Fhlr: FARM PO IAA, II n 701fi Gre t P' ^s — version a .0 U.S. Army Corps of Engineers WETLAND DETERMINATION DATA SHEET — Great Plains Region See ERDC/EL TR-10-1; the proponent agency is CECW-CO-R OMB Control #: 0710-0024, Exp: 11/30/2024 Requirement Control Symbol EXEMPT: (Authority: AR 335-15, paragraph 5-2a) Project/Site: Meining Property Applicant/Owner: J&T Consultants City/County: Grilcrest / Weld Investigator(s): T. Worley, N. Rothman Sampling Date: 11/6/2023 State: CO Sampling Point: UP4 Section, Township, Range: 30, 4 North, 66 West Landform (hillside, terrace, etc.): Agricultural field Local relief (concave, convex, none): None Subregion (LRR): LRR G, MLRA 67B Lat: 40.28757 °N Soil Map Unit Name: Olney fine sandy loam, 0-1% slopes Slope (%): 0 Long: -104.817 °W Datum: NAD83 NWI classification: None Are climatic / hydrologic conditions on the site typical for this time of year? Yes No (If no, explain in Remarks.) Are Vegetation N , Soil N , or Hydrology N significantly disturbed? Are "Normal Circumstances" present? Yes Y No Are Vegetation N , Soil N , or Hydrology N naturally problematic? (If needed, explain any answers in Remarks.) SUMMARY OF FINDINGS — Attach site map showing sampling point locations, transects, important features, etc Hydrophytic Vegetation Present? Yes No X Is the Sampled Area within a Wetland? Yes No X Hydric Soil Present? Yes No X Wetland Hydrology Present? Yes No X Remarks: Upland data point in agricultural field in the northwest corner of the property. VEGETATION — Use scientific names of plants. Absolute Dominant Tree Stratum (Plot size: 30 ) % Cover Species? Indicator Status Dominance Test worksheet: 1. Number of Dominant Species That 2- Are OBL, FACW, or FAC: 0 (A) 3. Total Number of Dominant Species 4. Across All Strata: 1 (B) =Total Cover Percent of Dominant Species That Sapling/Shrub Stratum (Plot size: 15 ) Are OBL, FACW, or FAC: 0.0% (A/B) 1. 2. Prevalence Index worksheet: 3. Total % Cover of: Multiply by: 4. OBL species 0 x 1 = 0 5. FACW species 0 x 2 = 0 =Total Cover FAC species 0 x 3 = 0 Herb Stratum (Plot size: 5 ) FACU species 0 x 4 = 0 1. Triticum aestivum 50 Yes UPL UPL species 50 x 5 = 250 2. Column Totals: 50 (A) 250 (B) 3. Prevalence Index = B/A = 5.00 4. 5. Hydrophytic Vegetation Indicators: 6. 1 - Rapid Test for Hydrophytic Vegetation 7. _ 2 - Dominance Test is >50% 8. _ 3 - Prevalence Index is ≤3.01 9. _ - Morphological Adaptations' (Provide supporting 10. _4 data in Remarks or on a separate sheet) 50 =Total Cover Problematic Hydrophytic Vegetation' (Explain) Woody Vine Stratum (Plot size: 5 ) _ 'Indicators of hydric soil and wetland hydrology must 1. be present, unless disturbed or problematic. 2. Hydrophytic =Total Cover Vegetation % Bare Ground in Herb Stratum 50 Present? Yes No X Remarks: Data point in winter wheat field. Field has been recently harvested. Nr; FARM M IRA, -11.11 91198 Greajpiains .. 1/arcinn J .0 SOIL Sampling Point: UP4 Profile Description: (Describe to the depth needed to document the indicator or confirm the absence Depth Matrix Redox Features of indicators.) Remarks finches) Color (moist) % Color (moist) % Type1 Loc2 Texture 0-18 10YR 4/3 100 'Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2Location: PL=Pore Lining, M=Matrix. Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) _ Histosol (Al) Sandy Gleyed Matrix (S4) (F7) (F16) H) Indicators for Problematic Hydric Soils3: 1 cm Muck (A9) (LRR I, J) Histic Epipedon (A2) _ Redox (S5) _ _ Coast Prairie Redox (A16) (LRR F, G, H) Dark Surface (S7) (LRR G) Black Histic (A3) _Sandy Stripped Matrix (S6) Hydrogen Sulfide (A4) _ _Loamy Mucky Mineral (F1) Loamy Gleyed Matrix (F2) _ _ High Plains Depressions (F16) (LRR H outside of MLRA 72 & 73) _ Reduced Vertic (F18) Red Parent Material (F21) _Stratified Layers (A5) (LRR F) _1 cm Muck (A9) (LRR F, G, H) _ Depleted Matrix (F3) Depleted Below Dark Surface (A11) _ Redox Dark Surface (F6) _Thick Dark Surface (Al2) _ Depleted Dark Surface _ Very Shallow Dark Surface (F22) _Sandy Mucky Mineral (S1) _ Redox Depressions (F8) _ _ Other (Explain in Remarks) 3lndicators of hydrophytic vegetation and wetland hydrology must be present, unless disturbed or problematic. _2.5 cm Mucky Peat or Peat (S2) (LRR G, H) _ High Plains Depressions cm Mucky Peat or Peat (S3) (LRR F) _ (MLRA 72 & 73 of LRR _5 Restrictive Layer (if observed): Type: Hydric Soil Present? Yes No X Depth (inches): Remarks: No hydric soil indicators. HYDROLOGY Wetland Hydrology Indicators: Primary Indicators {minimum of one is required: check all that apply) Secondary Indicators (minimum of two required). Water (Al) Crust (B11) _Surface Soil Cracks (B6) Sparsely Vegetated Concave Surface (B8) _Surface _Salt High Water Table (A2) Aquatic Invertebrates (B13) _ _Saturation (A3) Hydrogen Sulfide Odor (C1) Drainage Patterns (B10) _ Marks (B1) Dry -Season Water Table (C2) _ _Oxidized Rhizospheres on Living Roots (C3) (C3) (where tilled) Crayfish Burrows (C8) _Water _ _Sediment Deposits (B2) Oxidized Rhizospheres on Living Roots _ — Drift Deposits (B3) (where not tilled) _ Algal Mat or Crust (B4) _ Presence of Reduced Iron (C4) Visible on Aerial Imagery (C9) _Saturation _Iron Deposits (B5) Muck Surface (C7) Position (D2) _Thin Inundation Visible on Aerial Imagery (B7) _ Other (Explain in Remarks) _ Water -Stained Leaves (B9) _Geomorphic _ FAC-Neutral Test (D5) _ Frost -Heave Hummocks (D7) (LRR F) Field Observations: Surface Water Present? Yes No X Depth (inches): Wetland Hydrology Present? Yes No X Water Table Present? Yes No X Depth (inches): Saturation Present? Yes No X Depth (inches): (includes capillary fringe) Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: Remarks: No wetland indicators. N(z gQ M G116.c. JUL 201R !_rpn1 P3oine _ l/arcinn EXHIBIT K Climate Climate information was available for the Greeley, CO (UNC) weather station from the Western Regional Climate Center. The climate data collected from 1967 through 2023 indicates the average total annual precipitation at the site to be approximately 14.26 inches per year. Monthly average temperature and precipitation data for the 56 -year period of record are provided in the following table: Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual Average Max. Temperature (F) 42.29 46.91 57.04 65.05 73.57 84.85 90.5 88.33 80.61 67.09 52.4 42.34 65.88 Average Min. Temperature (F) 16.05 19.44 27.14 34.80 44.17 53.31 58.77 56.61 47.75 35.89 25.08 16.74 36.35 Average Total Precipitation (in.) 0.47 0.43 1.04 1.75 2.71 1.84 1.52 1.33 1.10 1.01 0.72 0.52 14.26 t JoT Consulting, Inc. Central Colorado Water Conservancy District Sweet Valley Pit DRMS 112 Permit Application EXHIBIT L Reclamation Cost A phased and cumulative bonding approach is proposed for the Sweet Valley Pit mining site operation. The financial warranty required for each phase is the warranty required to completely reclaim that phase. Direct costs related to the construction of the reclamation components that have been included in the financial warranty calculations include: Scarifying disturbed ground surfaces, re -applying topsoil over disturbed areas, revegetating disturbed areas, dewatering the full pit, slurry wall liner construction, and contractor mobilization. The slurry wall liner construction costs have been broken down further to include costs for different depths to bedrock as provided from the DRMS on previous 112 applications. Overhead, profit, and project management costs were then calculated and added to the direct construction costs to arrive at the required financial warranty for each phase. As each new phase is started, the financial warranty for that phase will be posted with the Division. When a phase has been reclaimed, inspected, and accepted by the Division, the associated financial warranty for that phase can then be reduced/released to 20% of the financial warranty required for that phase. Please see the attached calculations for details of the costs and quantities used to determine the financial warranty required for each phase of mining. The following table summarizes the financial warranty required for each phase, and the cumulative financial warranty that will be provided during any given phase. Reclamation Cost Summary Phase Additional Financial Warranty Required Cumulative Financial Warranty 1a $323,752 $323,752 1 $1,700,563 $2,024,315 2a $189.481 $2,213,796 2 $2,030,014 $4,243,810 J&T Consulting, Inc. Central Colorado Water Conservancy District Sweet Valley Pit DRMS 112 Permit Application RI" JET Consulting, Inc. Reclamation Bond Quantities and Costs G 2024 J&T Canaan. ine. Central Colorado Water Conservancy District Sweet Valley Pit 3/2212024 23038 S•aOC1 Valtoy Pit Rec Bond Cake - Summary of Unit Costs Direct costs Re -applying topsoil 12" thick Revegetating disturbed area Dewatering full pit Phase 1 Slurry Wall Cost (0-50 ft @ $4/ft - 51-70 ft @ $7/ft - 71-95 ft @ $13/ft) Scarifying Ground Mobilization Overhead and Profit Costs Liability insurance Performance bond Profit Project Management Engineering and bidding Management and administration Total Overhead Cost Total Additional Cost $1,800.00 /acre $1,000.00 / acre $400.00 / million gallons $291.00 / linear foot $200 / acre $2,500 lump sum 1.55% of direct cost 1.05% of direct cost 10.00% of direct cost 12.80% of direct cost 4.25% of direct cost 5.00% of direct cost 9.25% of direct cost J&'I' Consulting, Inc. Ilill Reclamation Bond Quantities and Costs O) 2024 ,TIT Commilih&. Inc. Central Colorado Water Conservancy District Sweet Valley Pit 3r22/202d 23038 Sweet Valley Pit Rec Bond Calcs Phase is - 83.56 acres (Prior to Exposing Groundwater) 'Reclamation Operation Scarifying - Topsoil/OB Stockpile, Access Road, Plant Site Areas, Loadout Area, Scale, and Disturbed Area Topsoil Placement - Topsoil/OB Stockpile, Access Road, Plant Site Areas, Loadout Area, Scale, and Disturbed Area Revegetate - Topsoil/OB Stockpile, Access Road, Plant Site Areas, Loadout Area, Scale, and Disturbed Area Removal of foundations for Scale House and Scale Mobilization [Total Required Financial Warranty For Phase la Phase 1 - 83.56 acres (Reclamation Operation Slurry Wall for Phase 1 Dewatering of Pit for Phase 1 Credit for Water Surface - Scarifying - Disturbed Area Credit Water Surface - Topsoil Placement - Disturbed Area Credit Water Surface - Revegetate - Disturbed Area Mobilization Additional Financial Warranty Required For Phase 1 Cummulative Financial Warranty Required For Phase la -1 Quantity Unit Unit Cost 83.56 ac 5 200 $ 83.56 ac $ 1,800 $ 83.56 ac $ 1,000 $ 50 cy $ 200.00 $ 1.0 Is $ 2,500 S Subtotal Direct Cost S Total Direct Cost $ Overhead and Profit Cost (12.60%) $ Cost 16,712 150,408 83,560 10,000 2.500 263,180 263,180 33,161 Contract Cost $ 296,341 Project Management (9.25%) $ 27,412 Quantity Unit Unit Cost 4,586 if $ 355 mg $ (32.23) ac $ (32.23) ac $ (32.23) ac $ 1.0 Is $ 291.00 400 200 1,800 1,000 2,500 Subtotal Direct Cost Total Direct Cost Overhead and Profit Cost (12.60%) $ 323,752 Cost I $ 1.334.526 $ 142,061 $ (6,446) $ (58,014) $ (32,230) $ 2,500 $ 1,382,397 $ 1,382,397 $ 174,182 Contract Cost $ 1,556,579 Project Management (9.25%) $ 143,984 $ 1,700,5631 $ 2,024,315 JET Consulting, Inc. Reclamation Bond Quantities and Costs 6 2024 ,J&T Consulting, Inc. Central Colorado Water Conservancy District Sweet Valley Pd V2202324 23038 Swres Valley Pit Rec Bond Cal% Phase 2a - 50.51 acres (Prior to Exposing Groundwater) Reclamation Operation Scarifying - Disturbed Area Topsoil Placement - Disturbed Area Revegetate - Disturbed Area Mobilization Quantity Unit Unit Cost Cost Total Required Financial Warranty For Phase 2a Cummulative Financial Warranty Required For Phase la -2a 50.51 ac $ 200 $ 50.51 ac $ 1,800 $ 50.51 ac $ 1,000 $ 1.0 Is $ 2,500 $ Subtotal Direct Cost S Total Direct Cost $ Overhead and Profit Cost (12.60%) $ 10,102 90,918 50,510 2.500 154.030 154,030 19,408 Contract Cost S 173,438 Project Management (9.25%) $ 16,043 Phase 2 • 50.51 acres Reclamation Operation $ 189,481 $ 2,293,796 Slurry Wall for Phase 2 Removal of Soil from Sediment Ponds and Removal of Berms for Sediment Ponds Dewatering of Pit for Phase 2 Credit for Water Surface - Scarifying - Disturbed Area Credit Water Surface - Topsoil Placement - Disturbed Area Credit Water Surface - Revegetate - Disturbed Area Mobilization Quantity Unit Unit Cost 5,254 16,000 518 (40.10) (40.10) (40.10) 1.0 If cY mg ac ac ac Is 291.00 2.00 400 200 1,800 1.000 2,50D Subtotal Direct Cost Total Direct Cost Overhead and Profit Cost (12.60%) Contract Cost 5 S $ Cost 1,528,914 32,000 207,096 (8,020) (72,180) (40.100) 2,500 1,850,210 1,650,210 207,926 1,858,137 Project Management (9.25%) $ 171,878 Additional Financial Warranty Required For Phase 2 Cummulative Financial Warranty Required For Phase 1a-2 S 2,030,014 $ 4,243,890 EXHIBIT M Other Permits and Licenses CCWCD will apply for and obtain the following permits and/or notices prior to commencement of any mining or mining -related activities that would require the permit or notice to be obtained at the Sweet Valley Pit mining site: Colorado Office of the State Engineer • Well Permit (Prior to exposing groundwater) • Substitute Water Supply Plan (Prior to exposing groundwater) • Leak Test Approval for Slurry Wall Liner(s) (after construction of slurry wall(s)) Colorado Department of Public Health and Environment • Air Pollution Emission Notice • Colorado Discharge Permit System Weld County • Use By Special Review Permit VJ&T Consulting, Inc. Central Colorado Water Conservancy District Sweet Valley Pit DRMS 112 Permit Application EXHIBIT N Source of Legal Right to Enter See attached deed. � • JoT Consulting, Inc. Central Colorado Water Conservancy District Sweet Valley Pit DRMS 112 Permit Application 46991.94 03/30/2021 03:44 PM Total Pages: 2 Rec Fee: $i .00 Doc Fee: $120.00 early Koppes - Clerk and�Fecorder, Weld County• , CO PERSONAL. ItEPRESEN'TATIVE'SDEED '1I1IS DEED naade by T. Scott Meinin -as Personal Representative ofthe Estate of Donald R. Meining, also known as Donald Richardvleining. also known as;Donald Meining, also known as Don Meiriing, Deceased, Grantor; to Central Coloradoy Water Conservancy ,District, a Quasi -Municipal Corporation, as Grantees, whose address iti•' 209 W 28`' Street, Greeley, CO z.;.'• i . WHLRJ AS, the deccdlent>died on the date of JA0.25, 25, 2020, leaving a W if I: dated April 29,.,2015, and the Grantor was duly appointed Persomq Representative of said testate by the 1)istrict.Court in and for the (.'aunty of Weld and State of -Colorado, Probate No. 2020PR30429, on the date of August 20 2020;,and is now qualified an'd acting in said capacity: NOW TI:-IIR[FORE, pursuant :to the powers conferred :Upon Grantor by the Colorado Probate,.,C:ode, Grantor does hotly sell and convey KO ' Grantees, for and consideration of I'c'uR MILLION EIGIIT:jitiNDRED THOUSAND .nrNI) No/100 ($4,800,09.000) DOLLARS (with such consideration : icing allocated $1.200,060.00 to real propctty -'and 0.0 $3,600,000 to the Water Rights, described below) the folio ing described real property situate in the. County of Weld, State of Colorado, free and clear of all liens and encumbrances except the lien lot non -delinquent gcne,a1 property taxes for 2021'dUc in 2022 : LOT'S A -AND C, RECORDED EXEMPTION NO. 1057 -30 -1 -RE 3144, REC=ORDED JUNE 14, 2002 Al ftLCEPTION NO. 296I3,72:''f3FINU PART` OF THE NOR'l'Ht XST QUARTER OF ,S1rtCITON 30, /. OWNSI IIP 4 NORTH, RAWGE 66 WEST OF THEr6TII PRINCIPAL 1v1ER1DlAN, COUNTY'.Ol WELD, STATE OF COLORADO • EXCEPT THAT; PORTION DESCRIBED:1N DEED RECORDED.;.': JANUARY 7,i1 94i IN HOOK 1072 AT PAAGE 567. '•'TOGS Fl !ER WITH all right's, casements, and hcnef-tts;atspurtenant thereto, and TOGETHER WI'I II' the. following Water „Rights, free and clear of,; f 1 liens and t. encumbrances: A. Irrigation Wells as identified below and thc,WAS Class D Irrigation Contract, C.ontraet' No. 912 and all permits, decrees, materials;; easements, puknz s and equipment appurtenant}thereto: • .f 1rrigalioklyAl[s Permit No. .;.V5( WDID:0202250 13659 Wf3N3 0207251 13660,.:. . Case No. W-1802 4699194 03/30/2021 03:44 4/1: Page`2 of 2 ri 1-'3. The following Water i‘fiares, together with ali?,ditch, ditch rights, laterals, casements,: hcadgatcs, equipment altd other appurtenances identified as follows: ' Company • (.f Certificate No,. Farinprs.lndependent 1147 ❑i t;cti:Company t. '.V Western Mutual .7.617 • Ditch Company No. of Shares 23 I EXCEPTING AND RESERVING to Grantor, ii5`succcssors and assigns,,.all of .',.•,t rantor's right, title ancl,inferest in all oil, gas, and other minerals, not to include sand and gravel, with respeeito the Real Property described above, but without riglft cif surface entry or use of theATii Tace and subsurface of c1i Real Property to a depeci1' 500 from the surface of tlic'Rcal Property together;;/%0t the right to grant leases of Grantor's reserved rights provided such lessee waiVes'the use of the surface xf.siieh Real Property to a depth -o! 500 feet of the surface.-. I:xecuted this �1{ ' day of March, 202I ? STATE OF CO1:ORADO COUNTY V►fl:r,D Fsk ss. Estate of Donald R. Meining ilso known as 7ctiald Richard Meininw:also known as t)onald Meining, also kiitiwn as Don Meining, Dcccscd By LI T, Scott Meining, Peral RcprrCscntative , `, The foregoing:instrument strument was acknowledged before me this U ,.day of March, r .- R 2021,by T. Scott Meini ,(iii Personal Rcprescntative of the Estate of Donald . Meining, also ,.known as Donald Richard Meining, also known as Donald Meining. i1so known as Don Meining, Deceased..' My commission expires;,f----0-' , '/ 1.2 2) Witness my hand and official seal. 7 ANGELA C GARDNER NOTAR :PUBLIC STATE O COLORADO t+if5 ' i)19994014689 My ia'Won Expires May 21, 2023 • t: EXHIBIT 0 Owner of Record of Affected Land (Surface Area) and Owner of Substance to be Mined Central Colorado Water Conservancy District 3209 W. 28th Street Greeley, CO 80634 Deed is attached. J&T Consulting, Inc. Central Colorado Water Conservancy District Sweet Valley Pit DRMS 112 Permit Application 4699194 03/30/2021 03:4 },PMI Total Pages: 2 Rec Fee: $18.00 Doc Fee: $120.00 C�ariy Koppes - Clerk and,lecorder, Weld County s- CO I'ERSONAK REPRESENTAT11VE'S:.i 'EED '11115 DIET) it nGle by T. Scott Meining, r,s Persona] Representativ :of the Estate of Donald R. Meining. also known as Donald Richard Meining. also known as •Donald Meining, . also known as Don Meining, Deceased, Cirantoic; • to Central Colorado •Water Conservancy • ''•17istrict, a Quasi -Municipal Corporation, as Grantees, whose address i ':.3209 W 28`x' Street, Greeley, CO 8063f,'..,%.' ',WHEREAS, the dcccdut'died on the date of Junc≥.25, 2020, leaving a Will;tlated April 29,•2015, and the Grantor was duly appointed Personal Representative of said f state by the District•Court in and for the County of Weld and State of, Colorado. Probate No. 2020PR30429, on the date of August 20.2(Y20 find is now qualified and acting in said capacity; NOW,TNFREPORI::, pursuant :to the powers conferred ,:upon Grantor by the Colorado Probate..;(ode, Grantor does her0-i sell and convey tagt.) , Grantees, for and iii;, consideration of:: �OU1t MILLION EIGHT PUNDRED THOUSAND AND No/100 ($4.800,000 00) DOLLARS (with such consideration: being allocated $1,200;000.00 to real property;; -and $3,600,000`01) to the Water Rights described below) the following described real propeft' situate in the .County of Weld, State of, Colorado, free and clear cif all liens and eneLImbrapecs except the lien foi non -delinquent general *operty taxes for 2021;'dcic in 2022 : ( LOT'S A -A!11) C, RECORDED LXI�MPTIt)N NO. 1057 -30 -1 -RE -3144, RECQ.RDGD JUNE 14, 2002 A:P_k10EPTION NO. 29613,72AliI=-ING PART OF THE NOR't'l t AST QUARTER OF S• . lT t)N 30, ,:TOWNSHIP 4 NORTH, RANGE 66 WEST OF THEr6T11 PRINCIPAL MERIDIAN, COUN•I'Y..Qtz-WELD, STATE OF (.0! ORADO EXCEPT THAT. PORTION DESCRl13ED,A,4 DEED RECORDED...i \ .c.) JANUARY 7,,1941 1N ROOK 1072 AT PA'GL 567. t•- .�,,.�1'OGETIIER WITH all rights, easements, and henefitstiqippurtenant thereto, and TOGETHER W1 11 the following Water ,Rig;Iits, free and clear of ,AI liens and encumbrances: <.; -' r •A. Irrigation Wells,as identified below and the, A/X'S Class D Irrigation Contract, Contract. No. 912 and all parittits, decrees, materials;: '•' easements, pulnOs'and equipment apptirtcltant�thereto: Irrigatioo;Wefls WDiD 0102250 W,f:lr? 0207251 z.S ,i Permit No... 13659 1366( .' ( r':• • Y -f Case Q W-1802 W-1802,_. •'- 1 4699194 03/30/2021 03:44 PM Pale 2 of 2 • "`l'3. The following Water'flares, together with all.,drtch, ditch rights, laterals, casements, hcadgatcs, equipment algid other appurtenances identified as follrn : Company_ Farinefs.Independent Ditch' eoinpaiiy ;Western Mutual Ditch Company r:• .. Certificate No. ,, No. of Shares 1147 23 13!.)1' EXCEPTING AND }t 4S :RVING to Grantor, "1t5 successors and assigns,•.a(l of .'.,.Grantor's right, title and. irir'erest in all oil, gas, and other minerals, not to incliude'sand and gravel, with respect- to the Real Property des.rih&l above, but without rigltt elf surface entry or use of therstirface and subsurface of.,stfes'1I Real Property to a depth of 500 from the surface of: tlie''tcal Property together' W.iih the right to grant leases of Grantor's reserved righ!§,•-p 'ovided such lessee waiyes'thc use of the surface pf,si cli Real Property to a depth of 500 feet of the surface., , t Executed this :';?f Y' ' day of March, 2.021'. { STATE OF COiI.fIVADO ) ss. COUNTY OF: WI?1.D ) Est* Of Donald R. Meining; also known as ;37onald Richard Meinink,a lsio known as "Donald Meining, also kti"wn as Don Meining, ❑ccciiscd I3 - i f ' �,� ris• y,"t �r�r4l' ,. f `�. '7i'.�9/'■i• ►•9 frw By1 T. Slott Meining, Perzr'nal IRg lresentative i r The foregoing tiistrutttent was acknowledged before me this 1-_)U.,'„day ,day of March, 202'1,'by T. Scott Meinii g,(d_s Personal Rcpresentatiiye=of the Estate of Donaldl'It. Meining, also , kfiown as Donald Richhcd Meining, also kn�rwn'as Donald Meining,;; also known as Don '' Meining, Deceased. <';'`` ,c` :! : ,..my commission expires. '2,3 , Witness my hand and Official seal. ANGELA C GARDNER NOTARY PUBLIC STATE OF:COLORADO NO ' tiY (] 19994014689 My CouliOsilon expires May 21, 2023 i,4ry Public L., I EXHIBIT P Municipalities within Two Miles Town of Gilcrest 304 8t" Street Gilcrest, Colorado 80623 Town of Milliken 1101 Broad Street P.O. Box 290 Milliken, Colorado 80543 Ilm WI JoT Consulting, Inc. Central Colorado Water Conservancy District Sweet Valley Pit DRMS 112 Permit Application EXHIBIT Q Proof of Mailing Notices to County Commissioners and Soil Conservation District See attached. !iIhui JAN Consulting, Inc. Central Colorado Water Conservancy District Sweet Valley Pit DRMS 112 Permit Application NOTICE OF FILING APPLICATION FOR COLORADO MINED LAND RECLAMATION PERMIT FOR NOTICE TO THE BOARD OF SUPERVISORS OF THE LOCAL CONSERVATION DISTRICT fJ !: 10'07 DISTRICT il Oairdade Water Candontency of (the "Applicant/Operator") has applied fbr a Reguler (112) redo:nation peamit from the Colorado Mined Land Reclamation Board (the "Board") to conduct the extraction of consintotion materials operations in Wald County. The attached Information is being provided to notify you of the location and nature of the proposed operation. The entire application Is on file with the Division of Reciamatice, Mining, and Safety (the "Division') and the local county clerk and recorder. The applies d/operatuw proposes to reclaim the atlihcted land to Denkilled WWI R.1141"68 use. Pursuant to Section 3432.5-116(4Xm), C,R3,, the Board may confer with the local Conservation Districts before approving of the post -mining land use. Accordingly, the Board would appreciate your correneots on the proposed operation. Please note that, in order to preserve your right to a hearing before the Board on this application, you must submit written comments on the application within twenty (20) days of the date of last publication of notice pursuant to Section 341.32.5-112(10), C.R.S. Ifyou would like to discuss the proposed post -naffing land use, or al y other issue regarding this applicerioo, please contact the Division of Reclamation, Mining, and Safety.1313 Sherman Street, Room 215, Denver, Colorado 80203, (303) 866-3567. NOTE TO APruC agralI ! R 4TOI You must attach a copy of the application form to this notice. If this is awoke ofa charge to a previously filed application you must either attach a copy of the chaff, or attach a complete and accurate description of the change. TomoYo. T;sck,,l2 L`j'/3/'� EXHIBIT R Proof of Filing with County Clerk or Recorder See attached. !ilhui J&T Consulting, Inc. Central Colorado Water Conservancy District Sweet Valley Pit DRMS 112 Permit Application EXHIBIT S Permanent Man -Made Structures within 200 Ft of the Affected Land 1. Power Lines/Poles 2. Phone Lines/Poles 3. Oil and Gas Lines 4. Fences/Structures 5. Buildings 6. County Roads and ROW 7. Irrigation Channels/Ditches/Pipelines 8. Water and Sewer Pipelines CCWCD believes that the mining operation, as proposed, will not adversely affect the permanent, man-made structures located within 200 feet of the east, west, north, and south side of the permit boundary. However, the applicant still anticipates providing evidence of agreements for compensation with the appropriate structure owners or an engineering evaluation (see attached slope stability report) that adequately demonstrates that the proposed mining and reclamation operations will not result in damage to the structures. There are abandoned PDC Energy, Inc. oil/gas wells and an oil/gas lines located within the mining limits and within the permit boundary. CCWCD is pursuing agreements with PDC Energy, Inc. to develop a surface use agreement as required to address removal of the oil/gas well and the oil/gas line. PDC Energy, Inc. is the only oil/gas lessee that will be affected by the mining. The list of structure owners and structures are as follows (please refer to the mining plan maps for the specific locations): Centurylink Phone and Fiber Optic Lines Xcel Energy Overhead Power Lines Central Weld County Water District Water Pipeline Town of Gilcrest Sanitary Sewer Pipeline LIJET Consulting, Inc. Central Colorado Water Conservancy District Sweet Valley Pit DRMS 112 Permit Application PDC Energy/Chevron Oil/Gas Wells (active and abandoned) Oil/Gas Pipelines Tank Batteries and Equipment Williams Gilcrest (Formerly Cureton Gilcrest Midstream) Gas Pipelines Western Midstream Gas Pipelines DCP Midstream/Phillips 66 Gas Pipelines Suncor Energy Oil/Gas Pipelines Weld County County Roads and ROW CDOT Hwy 60, ROW, and fence Western Mutal ❑itch Company Irrigation Ditch, Structures HS Land & Cattle Irrigation Pipeline and Ditch, Structures, Fence Poncelow Family Living Trust Buildings, Structures, Fence CAW Equities, LLC Structures Brent and Fawn Graybill Fence, Building, Structures Brady and Lauren Sharp Fence, Building, Structures Terry and Janice Wiedeman Irrigation Ditch, Structures CTW Properties, LLC Irrigation Ditch, Structures Meininq Cattle Co., LLC Structures VII J&T Consulting, Inc. Central Colorado Water Conservancy District Sweet Valley Pit DRMS 112 Permit Application Scott Meininq (Donald Meinind) Structures, Buildings Red Teirra Equities, LLC Structures, Irrigation Ditches Central Colorado Water Conservancy District (CCWCD) Structures, Irrigation Ditches, Buildings, Fence Wiliam and Kimberly Scott Irrigation Ditch, Structures, Fence, Building Patrick and Sheryl Maroney Irrigation Ditch/Pipeline, Structures, Fence, Building Chad and Kelly Doolittle Irrigation Ditch, Structures, Fence, Building Gerald and Teresa Moran, Sarah Drinkwine Irrigation Ditch, Structures, Building li lI J&T Consulting, Inc. Central Colorado Water Conservancy District Sweet Valley Pit DRMS 112 Permit Application SLOPE STABILITY REPORT FOR THE SWEET VALLEY PIT WELD COUNTY, COLORADO MARCH, 2024 PREPARED FOR: WHERE THE FUTURE FLOWS CENTRAL COLORADO WATER CONSERVANCY DISTRICT 3209 W. 28TH STREET GREELEY, CO 80634 (970) 330-4540 PREPARED BY: J&T Consulting, Inc. 305 DENVER AVENUE - SUITE D FORT LUPTON, CO 80621 PHONE: 303-857-6222 CERTIFICATION: I hereby certify this slope stability analysis for Central Colorado Water Conservancy District, the Sweet Valley Pit, located in Weld County, Colorado was prepared by me or under my direct supervision. James C. York Registered Professional Engineer State of Colorado No. 36846 JT J&T Consulting, Inc. Central Colorado Water Conservancy District — Sweet Valley Pit Slope Stability Analysis Page i Table of Contents I. Introduction II. Overview III. Geotechnical Data IV. ❑esipn Analysis and Criteria V. Methodology VI. Slope Stability Results VII. Conclusions and Recommendations Appendices Appendix A Slope Stability Case Location Map Appendix B Slope Stability Case Cross -Sections Appendix C Slope Stability Case Galena Output Appendix D Boring and Monitoring Well Logs Appendix E USGS Map, Oct. 2002 revision — "Peak Acceleration (%g) with a 2% Probability of Exceedance in 50 yrs" LinJ&T Consulting, Inc. Central Colorado Water Conservancy District — Sweet Valley Pit Slope Stability Analysis Page ii INTRODUCTION Central Colorado Water Conservancy District (CCWCD) proposes to mine the property located in the Northeast %4 of Section 30, Township 4 North, Range 66 West of the 6th Principal Meridian, in Weld County, Colorado. The property is bounded by Weld County Road 42 on the north, County Road 25.5 on the west, and private property to the east and south, and private property to the north and west. The Western Mutual Ditch runs west to east through the site. The proposed mining operation will extract gravel reserves from locations adjacent to man-made structures. The rules and regulations of the Division of Reclamation, Mining, and Safety (DRMS) require that any excavation within a 200 -foot setback of a man-made structure shows thorough engineering analysis that the proposed excavation will not cause damage to the structure. The accepted method of demonstrating this is through a slope stability analysis. This report contains an overview of the methodology used in the analysis of the excavated slopes and their estimated affects on all man-made structures. Recommendations regarding acceptable setbacks from man-made structures have also been included. OVERVIEW The DRMS mining plan proposes that the north cell and the south cell will be excavated at 3H:1 V slopes. Reclamation of the north and south cell will be done by leaving the mining slopes in place. The north cell will cover an estimated 32.23 surface acres when full. The south cell will cover an estimated 40.10 surface acres when full. The actual surface area will depend on the final configuration of the reservoir after reclamation is complete. GEOTECHNICAL DATA CMT Technical Services (CMT) contracted with Dakota Drilling to conduct subsurface drilling for the gravel investigation. Soil boring logs were provided by CMT for the locations of the soil borings. J&T Consulting, Inc. (JT) used estimated soil strength parameters provided by CMT that are based on the soil types found, CMT's professional opinion and other stability analyses that have been performed on gravel mining operations along the Front Range. Table 1 represents a summary of the soil strength parameters that were used in this stability analysis. LTJ&T Consulting, Inc. Central Colorado Water Conservancy District — Sweet Valley Pit Slope Stability Analysis Page 1 Table 1 — Soil Properties Description Max dry density (pcf) Saturated Density (pcf) Cohesion (psf) Internal Friction Angle Overburden/Clay 100 115 50 25 Sand and Gravel 115 130 10 35 Stable Claystone Bedrock 120 135 3000 0 Stable Siltstone Bedrock 117 133 3000 0 Stable Sandstone Bedrock 115 128 3000 0 Slurry Wall 100 110 0 45 DESIGN ANALYSIS AND CRITERIA The proposed mining slopes were analyzed using Clover Technologies Galena Slope Stability Analysis System, version 7.2. Galena was designed to analyze the slope stability of earth embankments subjected to several critical situations that may occur during the life of the embankment. For this project, eight cases were identified as critical during the mining operation. Static and pseudo -static conditions were analyzed for each case. Pseudo -static peak acceleration factors (peak horizontal acceleration, or PHA) were taken from USGS information for the western United States. The 2% probability of exceedance in 50 years (the most conservative) was used. A peak acceleration factor of 0.10 x gravity was taken from this data. A conservative earthquake loading coefficient of 0.50 x PHA is often used for slope stability analyses (50% of PHA). We used an even more conservative approach and used 70% of the PHA for this area for our earthquake loading coefficient. Hence, 0.70 x 0.10 = 0.07. All mining and reclamation side slopes will be 3H:1 V. The locations of the cases are shown on the case location map included in Appendix A. Case SS -1: Gas Line Easement, Gas Line, and County Road 42 Right -of -Way. The mining operation is adjacent to a gas line easement, a gas line, Weld County Road 42 right-of-way, and the edge of Weld County Road 42 (gravel road) on the north side of the north cell. The proposed setback for excavation is 39 feet from the gas line easement. The excavation depth is planned to be 55 feet in this area. Case SS -2: Gas Line Easement, Gas Line, Property Line/Fence and House. The mining operation is adjacent to a gas line easement, a gas line, a property line/fence and a house on the east side of the north cell. The proposed setback for excavation is 47' feet from the gas line easement. The excavation depth is planned to be 52 feet in this area. l!il J&T Consulting, Inc. Central Colorado Water Conservancy District — Sweet Valley Pit Slope Stability Analysis Page 2 Case SS -3: Gas Line, County Road 25.5 Right -of -Way, Telephone Line, and House. The mining operation is adjacent to a gas line, Weld County Road 25.5 right-of-way, the edge of Weld County Road 25.5 (gravel road), telephone line, and a house on the west side of the north cell. The proposed setback for excavation is 40 feet from the gas line. The excavation depth is planned to be 59 feet in this area. Case SS -4: Two Gas Lines and a Gas Well. The mining operation is adjacent to two gas lines and a gas well east of the south cell. The proposed setback for excavation is 119 feet from the gas line. The excavation depth is planned to be 58 feet in this area. Case SS -5: Gas Line Easement, Two Gas Lines, and the Property Line. The mining operation is adjacent to a gas line easement, two gas lines, and the property line south of the south cell. The proposed setback for excavation is 42 feet from the gas line easement. The excavation depth is planned to be 61 feet in this area. Case SS -6: County Road 25.5 Right -of -Way, Gas Line, and House. The mining operation is adjacent to a Weld County Road 25.5 right-of-way, gas line, and house, the edge of Weld County Road 25.5 (gravel road), gas line, and a house on the west side of the south cell. The proposed setback for excavation is 46 feet from the Weld County Road 25.5 right-of-way. The excavation depth is planned to be 62 feet in this area. Case SS -7N: Western Mutual Ditch and Gas Line. The mining operation is adjacent to the Western Mutual Ditch and a gas line south of the north cell. The proposed setback for excavation is 55 feet from the Western Mutual Ditch. The excavation depth is planned to be 57 feet in this area. Case SS -7S: Western Mutual Ditch and Gas Line. The mining operation is adjacent to the Western Mutual Ditch and a gas line north of the south cell. The proposed setback for excavation is 71 feet from the Western Mutual Ditch. The excavation depth is planned to be 58 feet in this area. The cross -sections located in Appendix B show the estimated phreatic surface associated with each case as well as the geometry used in the excavation of the mining and reclamation slopes. Note that groundwater was found to be below all planned excavation depths. METHODOLOGY The excavation slope configuration shown in the computer analysis represents the estimated conditions for this site. If excavation slope conditions differ from the estimated conditions, the slope stability will need to be re-evaluated on a case -by -case basis. The Bishop Method was used in the computer analysis for determining safety factors. The procedure searches for circular shear failures and automatically searches for the lowest safety factor. 20,000 separate failure surfaces were analyzed for each case. The required Illiiin J&T Consulting, Inc. Central Colorado Water Conservancy District — Sweet Valley Pit Slope Stability Analysis Page 3 minimum safety factors are based on the policy of the Mined Land Reclamation Board (MLRB) for Factors of Safety for Slope Stability/ Geotechnical Analyses. All cases were analyzed using mining condition geometry to determine the factor of safety for each case. Case SS -1, for the north cell, is 42 feet from a critical structure and has a 57 foot depth of the reclamation slope. Case SS -7S, for the south cell, is 71 feet from a critical structure and has a 62 foot depth of the reclamation slope. Both cases were analyzed to determine the minimum factor of safety for all reclaimed slopes. SLOPE STABILITY RESULTS The MLRB requires minimum safety factors of 1.50 for static condition analyses and 1.30 for pseudo -static (earthquake loading) condition analyses for embankments adjacent to critical structures when estimated soil strength parameters are used. The calculated factors of safety are within the design criteria specified for this project and can be considered indicators of the excavation slope performance under the various conditions. The results of the static condition and pseudo -static condition slope stability analyses are shown in Table 2, Table 3, and Table 4 below. Table 2: Mining Conditions Static Condition Slope Stability Analysis Results Description Calculated Factor of Safety Required Minimum Factor of Safety 1.50 Case SS -1 — Gas Line Easement, Gas Line, and County Road 42 ROW North of Pit — Static 2.48 Case SS -2 — Gas Line Easement, Gas Line, Property Line / Fence, and House East of Pit — Static 2.57 1.50 Case SS -3 — Gas Line, County Road 25.5 ROW, Telephone Line, and House West of Pit — Static 2.61 1.50 Case SS -4 — Gravel Road & Fence East of Pit — Static 3.07 1.50 Case SS -5 — Gas Line Easement, Two Gas Lines, and the Property Line South of Pit — Static 2.45 1.50 Case SS -6 — County Road 25.5 ROW, Gas Line, and House West of Pit — Static 2.46 1.50 Case SS -7N — Western Mutual Ditch and Gas Line South of Pit - Static 2.60 1.50 Case SS -7S — Western Mutual Ditch and Gas Line North of Pit - Static 2.96 1.50 LIIiii; J&T Consulting, Inc. Central Colorado Water Conservancy District — Sweet Valley Pit Slope Stability Analysis Page 4 Table 3: Mining Conditions Pseudo -Static Condition Slope Stability Analysis Results Description Calculated Factor of Safety Required Minimum Factor of Safety Case SS -1 — Gas Line Easement, Gas Line, and County Road 42 ROW North of Pit — Pseudo -Static 1.96 1.30 Case SS -2 — Gas Line Easement, Gas Line, Property Line / Fence, and House East of Pit — Pseudo -Static 2.02 1.30 Case SS -3 — Gas Line, County Road 25.5 ROW, Telephone Line, and House West of Pit — Pseudo -Static 2.05 1.30 Case SS -4 — Gravel Road & Fence East of Pit — Pseudo -Static 2.28 1.30 Case SS -5 — Gas Line Easement, Two Gas Lines, and the Property Line South of Pit — Pseudo -Static 1.94 1.30 Case SS -6 — County Road 25.5 ROW, Gas Line, and House West of Pit — Pseudo -Static 1.95 1.30 Case SS -7N — Western Mutual Ditch and Gas Line South of Pit — Pseudo -Static 2.04 1.30 Case SS -7S — Western Mutual Ditch and Gas Line North of Pit — Pseudo -Static 2.27 1.30 Table 4: Reclaimed Conditions Static & Pseudo -Static Condition Slope Stability Analysis Results Description Calculated Factor of Safety Required Minimum Factor Of Safety 1.50 Case SS -1 — Gas Line Easement, Gas Line, and County Road 42 ROW North of Pit — Static 2.21 Case SS -1 — Gas Line Easement, Gas Line, and County Road 42 ROW North of Pit — Pseudo -Static 1.76 1.30 Case SS -7S — Western Mutual Ditch and Gas Line North of Pit - Static 2.53 1.50 Case SS -7S — Western Mutual Ditch and Gas Line North of Pit — Pseudo -Static 1.93 1.30 The Galena analysis output files are included in Appendix C for all cases. J&T Consulting, Inc. Central Colorado Water Conservancy District — Sweet Valley Pit Slope Stability Analysis Page 5 CONCLUSIONS AND RECOMMENDATIONS Mining Conditions: Case SS -1: At a setback of 39 feet, the resulting safety factor of 2.48 exceeds the MLRB minimum requirement of 1.50 for an embankment adjacent to a critical structure. The resulting safety factor of 1.96 exceeds the MLRB minimum requirement of 1.30 for an embankment subject to earthquake loading. The proposed setback of 39 feet from the gas line easement, a gas line, Weld County Road 42 right-of-way, and the edge of Weld County Road 42 (gravel road) is satisfactory. Case SS -2: At a setback of 47 feet, the resulting safety factor of 2.57 exceeds the MLRB minimum requirement of 1.50 for an embankment adjacent to a critical structure. The resulting safety factor of 2.02 exceeds the MLRB minimum requirement of 1.30 for an embankment subject to earthquake loading. The proposed setback of 47 feet from the gas line easement, a gas line, a property line/fence and a house is satisfactory. Case SS -3: At a setback of 40 feet, the resulting safety factor of 2.61 exceeds the MLRB minimum requirement of 1.50 for an embankment adjacent to a critical structure. The resulting safety factor of 2.05 is above the MLRB minimum requirement of 1.30 for an embankment subject to earthquake loading. The proposed setback of 40 feet from the gas line, Weld County Road 25.5 right-of-way, the edge of Weld County Road 25.5 (gravel road), telephone line, and a house is satisfactory. Case SS -4: At a setback of 119 feet, the resulting safety factor of 3.07 exceeds the MLRB minimum requirement of 1.50 for an embankment adjacent to a critical structure. The resulting safety factor of 2.28 exceeds the MLRB minimum requirement of 1.30 for an embankment subject to earthquake loading. The proposed setback of 119 feet from the two gas lines and a gas well is satisfactory. Case SS -5: At a setback of 42 feet, the resulting safety factor of 2.45 exceeds the MLRB minimum requirement of 1.50 for an embankment adjacent to a critical structure. The resulting safety factor of 1.94 exceeds the MLRB minimum requirement of 1.30 for an embankment subject to earthquake loading. The proposed setback of 42 feet from the gas line easement, two gas lines, and the property line is satisfactory. Case SS -6: At a setback of 46 feet, the resulting safety factor of 2.46 exceeds the MLRB minimum requirement of 1.50 for an embankment adjacent to a critical structure. The resulting safety factor of 1.95 exceeds the MLRB minimum requirement of 1.30 for an embankment subject to earthquake loading. The proposed setback of 46 feet from the Weld County Road 25.5 right-of-way, gas line, and house is satisfactory. inIII J&T Consulting, Inc. Central Colorado Water Conservancy District— Sweet Valley Pit Slope Stability Analysis Page 6 Case SS -7N: At a setback of 55 feet, the resulting safety factor of 2.60 exceeds the MLRB minimum requirement of 1.50 for an embankment adjacent to a critical structure. The resulting safety factor of 2.04 exceeds the MLRB minimum requirement of 1.30 for an embankment subject to earthquake loading. The proposed setback of 55 feet from the Western Mutual Ditch and a gas line is satisfactory. Case SS -7S: At a setback of 71 feet, the resulting safety factor of 2.96 exceeds the MLRB minimum requirement of 1.50 for an embankment adjacent to a critical structure. The resulting safety factor of 2.27 exceeds the MLRB minimum requirement of 1.30 for an embankment subject to earthquake loading. The proposed setback of 71 feet from the Western Mutual Ditch and a gas line is satisfactory. Reclaimed Conditions: Case SS -1: At a setback of 39 feet, the resulting safety factor of 2.21 exceeds the MLRB minimum requirement of 1.50 for an embankment adjacent to a critical structure. The resulting safety factor of 1.76 exceeds the MLRB minimum requirement of 1.30 for an embankment subject to earthquake loading. The proposed setback of 39 feet from the gas line easement, a gas line, Weld County Road 42 right-of-way, and the edge of Weld County Road 42 (gravel road) is satisfactory. Case SS -7S: At a setback of 71 feet, the resulting safety factor of 2.53 exceeds the MLRB minimum requirement of 1.50 for an embankment adjacent to a critical structure. The resulting safety factor of 1.93 exceeds the MLRB minimum requirement of 1.30 for an embankment subject to earthquake loading. The proposed setback of 71 feet from the Western Mutual Ditch and a gas line is satisfactory. J&T Consulting, Inc. Central Colorado Water Conservancy District — Sweet Valley Pit Slope Stability Analysis Page 7 The following recommendations for monitoring of slope stability should be followed: 1. A visual inspection of the excavated slopes should be done on a weekly basis for the duration of mining. This inspection should consist of walking the existing ground and looking for any signs of stress cracks or other potential signs of slope failure. Some minor sloughing of slopes is expected on any mine site. The intent of this inspection is to locate potential major slope failures that could potentially extend back into a structure. 2. A visual inspection should be done after a major precipitation event that has saturated the ground using the same procedures. A major precipitation event would be defined as a storm that produces an intensity level reached once in 50 years on the average. 3. If a visual inspection detects signs of a potential slope failure, qualified personnel should be contacted to evaluate and recommend remediation work to stabilize the area. 4. If no visible signs of slope failure are detected during mining, then the inspection period could be reduced to once per 6 months after mining completion, or after every major precipitation event. J&T Consulting, Inc. Central Colorado Water Conservancy District — Sweet Valley Pit Slope Stability Analysis Page 8 APPENDIX A J&T Consulting, Inc. Central Colorado Water Conservancy District— Sweet Valley Pit Slope Stability Analysis P:\22009 Central Feasibility Studies\Drawings\Plan Sheets\Meining Slope Stability\JT-Meining-SS,dwg, SS Case Map, 2/29/2024 8:16:45 AM - -0_ LEGEND G T SECTION LINE PROPERTY LINE EASEMENT RIGHT-OF-WAY GAS LINE TELEPHONE LINE SECTION LINE PERMIT BOUNDARY MINING LIMIT SLURRY WALL 500 250 0 500 limp SCALE IN FEET MI J&T Consulting, Inc. 305 Denver Avenue - Suite D Fort Lupton, CO 80621 303-857-6222 CCWCD Sweet Valley Pit Slope Stability Case Location Map Date: 02.29.24 Job No: 23038 Drawn: TWT Scale: 1" = 500' Sheet: 1 Of: 1 APPENDIX B IIIn J&T Consulting, Inc. Central Colorado Water Conservancy District — Sweet Valley Pit Slope Stability Analysis Mining Conditions illin J&T Consulting, Inc. Central Colorado Water Conservancy District — Sweet Valley Pit Slope Stability Analysis Material Keys 1: Overburden/Clay (c:50 0:25 g:100) 4900 4850 4800 4750 4700 4650 4600 4550 I I l 0 50 100 150 200 250 300 350 400 450 500 550 600 GALENA Version 7.2 Licensed to: J 8 T Consulting Sat D 2: Sand and Gravel (c:10 m:35 g:115) Sat 3: Stable Claystone Bedrock (c:3000 0:0 8:120) Sat D 4: Stable Siltstone Bedrock (c:3000 0:0 g:117) Sat 5: Stable Sandstone Bedrock (c:3000 0:0 g:115) Sat 6: Slurry Wall (c:0 0:45 g:100) Sat 0 Analysis 1 Multiple Stability Analysis Method: Bishop Simplified Surface: Circular Results Critical Factor of Safety: 2.48 Project Sweet Valley Pit SS -1 - Mining Slope - Static File: P:\23038 CCWCD J2 Meining Farm\DRMS Permit\112 Permit\Slope Stability\Galena\S.V. Pit-SS1-Mining.gmf Edited: 5 Mar 2024 Processed: 5 Mar 2024 III MB J&T Consulting, Inc 4900 4850 4800 4750 4700 4650 4600 4550 I 1 f 0.070 I L I I 0 50 100 150 200 250 300 350 400 450 500 550 600 GALENA version 7.2 Licensed to: J & T Consulting Material Keys 1: Overburden/Clay (c:50 0:25 g:100) 2: Sand and Gravel (c:10 0:35 g:115) Sat D Sat D 3: Stable Claystone Bedrock (c:3000 0:0 g:120) Sato 4: Stable Siltstone Bedrock (c:3000 0:0 g:117) Sat D 5: Stable Sandstone Bedrock (c:3000 0:0 g:115) Sat D 6: Slurry Wall (c:0 0:45 g:100) Sat D Analysis 1 Multiple Stability Analysis Method: Bishop Simplified Surface: Circular Results Critical Factor of Safety: 1.96 Project Sweet Valley Pit SS -1 - Mining Slope - Pseudo Static Fi/e: P:\23038 CCWCD .12 Meining Farm\DRMS Permit \112 Permit\Slope Stability\Galena\S.V. Pit-SS1-Mining-Pseudo Static.gmf Edited: 5 Mar 2024 Processed: 5 Mar 2024 J&T Consulting, Ine. 4900 4850 4800 4750 4700 4650 4600 4550 4500 I ] I I I 0 50 100 150 200 250 300 350 400 450 500 550 600 GALENA Version 72 Licensed to: J 8 T Consulting Material Keys 1: Overburden/Clay (c:50 0:25 8:100) Sat 0 2: Sand and Gravel (c:10 e:35 8:115) Sato 3: Stable Claystone Bedrock (c:3000 0:0 g:120) Sat 0 5: Stable Sandstone Bedrock (c:3000 0:0 8:115) Sato 6: Slurry Wall (c:0 0:45 9:100) Sat 0 Analysis 1 Multiple Stability Analysis Method: Bishop Simplified Surface: Circular Results Critical Factor of Safety: 2.57 Project Sweet Valley Pit SS -2 - Mining Slope - Static File: P:123038 CCWCD J2 Meining Farm\DRMS Permit\112 Permit\Slope Stability \ Galena \S.V. Pit-SS2-Mining.gmf Edited: 5 Mar 2024 Processed: 5 Mar 2024 JaT Consulting, Inc. Material Keys 1: Overburden/Clay (c:50 e:25 g:100) 4900 4850 4800 4750 4700 4650 4600 4550 4500 t � I 0.070 1 I 0 50 100 150 200 250 300 350 400 450 500 550 600 GALENA Version 7.2 Licensed to: J & T Consulting Sat D 2: Sand and Gravel (c:10 e:35 g:115) Sat D 3 Stable Clayssone Bedrock (c.3000 e:0 0'120) Sat D 5: Stable Sandstone Bedrock (c:3000 0:0 g:115) Sat D 6: Slurry Wall (c:0 0:45 g:100) Sat D Analysis 1 Multiple Stability Analysis Method: Bishop Simplified Surface: Circular Results Critical Factor of Safety: 2.02 Project Sweet Valley Pit SS -2 - Mining Slope - Pseudo Static File: P:123038 CCWCD J2 Meining Farm\DRMS Permit\112 Permit Slope Stability\Galena\S V. Pit-SS2-lining-Pseudo Static.gmf Edited: 5 Mar 2024 Processed: 5 Mar 2024 u` J&T Consulting, Inc. 4950 4900 4850 4800 4750 4700 4650 4600 4550 — t I I I I 1 3 I 1 0 50 100 150 200 250 300 350 400 450 500 550 600 GALENA Version 72 Licensed to: J & T Consulting Material Keys 1: Overburden/Clay (c:50 0:25 g:100) Sat D 2: Sand and Gravel (0:10 0:35 g:115) Sat D 5: Stable Sandstone Bedrock (c:3000 0:0 g:115) Sat D 6: Slurry Wall (c:0 0:45 g:100) Sat D Analysis 1 Multiple Stability Analysis Method: Bishop Simplified Surface: Circular Results Critical Factor of Safety: 2.61 Project Sweet Valley Pit SS -3 - Mining Slope - Static File: P:\23038 CCWCD J2 Meining Farm\DRMS Permit\112 Permit\Slope Stability\ Galena\S.V. Pit-SS3-Mining.gmf Edited: 29 Feb 2024 Processed: 29 Feb 2024 7 �j UT Consulting, Inc. 4950 4900 4850 4800 4750 4700 4650 4600 4550 CR 42 ROW l I I 40 0.070 D 50 100 150 200 250 300 350 400 450 500 550 600 GALENA Version 72 Licensed to: J & T Consulting Material Keys 1: Overburden/Clay (c:50 0:25 g:100) Sat D 2: Sand and Gravel (c:10 0:35 g:115) Sat D 5: Stable Sandstone Bedrock (c:3000 0:0 g:115) Sat D 6: Slurry Wall (c:0 0:45 g:100) Sat D Analysis 1 Multiple Stability Analysis Method: Bishop Simplified Surface: Circular Results Critical Factor of Safety: Project Sweet Valley Pit SS -3 - Mining Slope - Pseudo Static File: P:\23038 CCWCD J2 Meining Farm \DRMS Permit\112 Permit\Slope Stability \ Galena\S.V. Pit-SS3-Mining-Pseudo Static.gmf 2.05 Edited: 29 Feb 2024 Processed.' 29 Feb 2024 J&T Consulting, Inc. Material Keys 1: Overburden/Clay (c:50 0:25 g:100) 4900 4850 4800 4750 4700 4650 4600 4550 4500 0 50 100 150 200 250 300 350 400 450 500 550 600 GALENA Version 72 Licensed to: J & T Consulting Sat D 2: Sand and Gravel (c:10 e:35 9:115) Sat D 3: Stable Claystone Bedrock (c:3000 0:0 g:120) Sat D 6: Slurry Wall (c:0 0:45 g:100) Analysis 1 Multiple Stability Analysis Method: Bishop Simplified Surface: Circular Sat D Results Critical Factor of Safety: 3.07 Project Sweet Valley Pit SS -4 - Mining Slope - Static File: P:123038 CCWCD J2 Meining Farm\DRMS Permit \112 Permit\Slope Stability\ Galena\S V. Pit-SS4-Mining.gmf Edited: 29 Feb 2024 Processed.- 29 Feb 2024 J&T Consulting, Inc. 4900 4850 4800 4750 4700 4650 4600 4550 4500 0 50 100 150 200 250 GALENA Version 72 300 350 400 450 500 550 600 Licensed to: J & T Consulting Material Keys 1: Overburden/Clay (c:50 e:25 g:100) Sat 2: Sand and Gravel (c:10 0:35 5:115) Sat D 3: Stable Claystone Bedrock (c:3000 0:0 5.120) Sal 0 6: Slurry Wall (c:0 0:45 g:100) Analysis 1 Multiple Stability Analysis Method: Bishop Simplified Surface: Circular Sat 0 Results Critical Factor of Safety: 2.28 Project Sweet Valley Pit SS -4 - Mining Slope - Pseudo Static File: P:\23038 CCWCD J2 Meining Farm\DRMS Permit\112 Permit\Slope Stability\Galena\S.V. Pit-SS4-Mining-Pseudo Static.gmf Edited: 29 Feb 2024 Processed: 29 Feb 2024 lid I J&T Consulting, Inc. 4950 4900 4850 4800 4750 4700 4650 4600 4550 t E 1 3 E< 42' E w S E w a (� c Ue (7 rn l 0 50 100 150 200 250 300 350 400 450 500 550 600 GALENA Version 7.2 Licensed to: J & T Consulting Material Keys 1: Overburden/Clay (c:50 e:25 g.100) Sat D 2: Sand and Gravel (c:10 e:35 g:115) Sat D 3: Stable Claystone Bedrock (c:3000 0:0 g:120) Sat D 6: Slurry Wall (c:0 0:45 g:10D) Analysis 1 Multiple Stability Analysis Method: Bishop Simplified Surface: Circular Sat D Results Critical Factor of Safety: 2.45 Project Sweet Valley Pit SS -5 - Mining Slope - Static File: P:123038 CCWCD J2 Meining Farm1DRMS Permit1112 Permit\Slope Stability\Galena\S.V. Pit-SS5-Mining.gmf Edited: 5 Mar 2024 Processed: 5 Mar 2024 J&T Consulting, Inc. �. r 4950 4900 4850 4800 4750 4700 4650 4600 4550 0.070 0 50 100 150 200 250 300 350 400 450 500 550 600 GALENA Version 72 Licensed to: J & T Consulting Material Keys 1: Overburden/Clay (c:50 0:25 9:100) A Sat D 2: Sand and Gravel (c:10 0:35 g:115) Sat D 3: Stable Claystone Bedrock (c:3000 0:0 g:120) Sat 0 6: Slurry Wall (c.0 0:45 g:100) Analysis 1 Multiple Stability Analysis Method: Bishop Simplified Surface: Circular Sat 0 Results Critical Factor of Safety: 1.94 Project Sweet Valley Pit SS -5 - Mining Slope - Pseudo Static File: P:\.23038 CCWCD J2 Meining Farm\DRMS Permit\112 Permit\Slope Stability \ Galena \S.V. Pit-SS5-Mining-Pseudo Static.gmf Edited: 5 Mar 2024 Processed: 5 Mar 2024 lr JtT Consulting, Inc. u.i 4950 4900 4850 4800 4750 4700 4650 4600 4550 x CR42 ROW 3 0 50 100 150 200 250 300 350 400 450 500 550 600 GALENA Version 7 2 Licensed to: J & T Consulting Material Keys 1: Overburden/Clay (c:50 0:25 g.100) Sat D 2: Sand and Gravel (c:10 e:35 g.115) Sat D 3: Stable Claystone Bedrock (c.3000 0:0 g:120J Sat 4: Stable Siltstone Bedrock (c:3000 0:0 g:117) Sat 6: Slurry Wall (c:0 0:45 g:100) Analysis 1 Multiple Stability Analysis Method: Bishop Simplified Surface: Circular Sat D Results Critical Factor of Safety: 2.46 Project Sweet Valley Pit SS -6 - Mining Slope - Static File: P:\23038 CCWCD J2 Meining Farm\DRMS Permit\112 Permit\Slope Stability\ Galena\S.V. Pit -SSE -Mining gmf Edited: 29 Feb 2024 Processed: 29 Feb 2024 idI J&T Consulting, Inc. 4950 4900 4850 4800 4750 4700 4650 4600 4550 070 0 50 100 150 200 250 300 350 400 450 500 550 600 GALENA Version 7.2 Licensed to: J & T Consulting Material Keys 1: Overburden/Clay (c:50 0:25 g.100) Sat D 2: Sand and Gravel (c:10 0:35 g:115) Sat D 3: Stable Claystone Bedrock (c:3000 0:0 g:120} Sc: D 4. Stable Sd/store Bedrock fc3000 0.0 g.117/ Sat D 6: Slurry Wall (c:0 0:45 g.100) Analysis 1 Multiple Stability Analysis Method: Bishop Simplified Surface: Circular Sat D Results Critical Factor of Safety: 1.95 Project Sweet Valley Pit SS -6 - Mining Slope - Pseudo Static File: P:\23038 CCWCD J2 Meining Farm\DRMS Permit\112 Permit Slope Stability \Galena \S V. Pit-SS6-Mining-Pseudo Static.gmf Edited: 29 Feb 2024 Processed: 29 Feb 2024 V1� JET Consulting, Inc. 4840 4820 4800 4780 4760 4740 4720 4700 4680 4660 4640 4620 4600 S Ditch Bank I I N Ditch Bank 55' S 03 Mining Limit d. t 300 350 400 GALENA version 72 450 500 1 I — 550 600 Licensed to: J & T Consulting Material Keys 1: Overburden/Clay (c:50 o:25 g:100) 2: Sand and Gravel (c:10 0:35 g:115) Sat D 3: Stable Claystone Bedrock (c:3000 0:0 8:120) Sat D 5: Stable Sandstone Bedrock (c:3000 0:0 g:115) Sat D 6: Slurry Wall (c:0 0:45 8:100) Sat D Sat D Analysis 1 Multiple Stability Analysis Method: Bishop Simplified Surface: Circular Results Critical Factor of Safety: 2.60 Project Sweet Valley Pit SS -7N - Mining Slope - Static File: P:\23038 CCWCD J2 Meining Farm\DRMS Permit \112 Permit\Slope Stability\Galena\S.V. Pit-SS7N-Mining.gmf Edited: 4 Mar 2024 Processed: 4 Mar 2024 UT Consulting, Inc. Material Keys 1: Overburden/Clay (c:50 0:25 g:100) 4840 4820 4800 4780 4760 4740 4720 4700 4680 4660 4640 4620 4600 S Ditch Bank N Ditch FIant, 55' >m C 0) Mtning Limit W 7.11-111111.177z, 300 350 400 GALENA version 7 2 450 500 550 600 Licensed to: J & T Consulting Sat D 2: Sand and Gravel (c:10 0:35 g:115) Sat D 3: Stable Claystone Bedrock (c:3000 0:0 g:120) rl Sat 5: Stable Sandstone Bedrock (c:3000 0:0 8:115) Sat D 6: Slurry Wall (c:0 0:45 9:100) Sat B Analysis 1 Multiple Stability Analysis Method: Bishop Simplified Surface: Circular Results Critical Factor of Safety: Project Sweet Valley Pit SS -7N - Mining Slope - Pseudo Static File: P:\23038 CCWCD J2 Meining Farm\DRMS Permit\112 Permit\Slope Stability \ Galena \S.V, Pit-SS7N-Mining-Pseudo Static.gmf 2.04 Edited: 4 Mar 2024 Processed: 4 Mar 2024 uJ&T Consulting, Inc. Material Keys 1: Overburden/Clay (c:50 e:25 g:100) 4840 - 4820 - 4800 -- 4780 — 4760 — 4740 — 4720 — 4700 — 4680 — 4660 — 4640 — 4620 — 0 GALENA version 7.2 50 100 C E c 150 200 71' 250 300 Licensed to: J & T Consulting Sat 2: Sand and Gravel (c:10 0:35 9:115) Sat D 4: Stable Siltstone Bedrock (c:3000 0:0 g:117) Sat D 6: Slurry Wall (c:0 0:45 g:100) Analysis 1 Multiple Stability Analysis Method: Bishop Simplified Surface: Circular Sat D Results Critical Factor of Safety: 2.96 Project Sweet Valley Pit SS -7S - Mining Slope - Static File: P:\23038 CCWCD J2 Meining Farm\DRMS Permit\112 Permit\Slope Stability \Galena \S.V. Pit-SS7S-Mining.gmf Edited: 4 Mar 2024 Processed: 4 Mar 2024 `r J&T Consulting, Inc. Material Keys 1: Overburden/Clay (c:50 0:25 g:100) 4840 — 4820 — 4800 — 4780 — 4760 — 4740 — 4720 — 4700 — 4680 --- 4660 — 4640 — 4620 -- 0 GALENA Version 7.2 0.079 71 $ DiIcr, Ran t0 N. Date, Bank 50 100 150 200 250 300 Licensed to: J & T Consulting Sat D 2: Sand and Gravel (c:10 0:35 9:115) Sat 0 4: Stable Siltstone Bedrock (c:3000 0:0 g:117) Sat D 6: Slurry Wall (c:0 0:45 8:100) Analysis 1 Multiple Stability Analysis Method: Bishop Simplified Surface: Circular Sat D Results Critical Factor of Safety: 2.27 Project Sweet Valley Pit SS -7S - Mining Slope - Pseudo Static File: P:\23038 CCWCD J2 Meining Farm \DBMS Permit\112 Permit\Slope Stability \ Galena \S.V. Pit-SS7S-Mining-Pseudo Static.gmf Edited: 4 Mar 2024 Processed: 4 Mar 2024 J:T Consulting, Inc. V.� Reclamation Conditions 4 J&T Consulting, Inc. Central Colorado Water Conservancy District — Sweet Valley Pit Slope Stability Analysis 4900 4850 4800 4750 4700 4650 4600 4550 1 3 O CR 42 ROW }E (.3 E 0l H I I I l L 0 50 100 150 200 250 300 350 400 450 500 550 600 GALENA version 72 Licensed to: J & T Consulting Material Keys 1: Overburden/Clay (c:50 0:25 g:100) 2: Sand and Gravel (c:10 0:35 g:115) Sat 9 3: Stable Claystone Bedrock (0:3000 0:0 g:120) Sat 9 4 Stable Silts -tone Bedrock (c 3000 e:0 g 117) Sat Et 5: Stable Sandstone Bedrock (0:3000 0:0 9:115) Sat fl 6: Slurry Wall (c:0 0:45 g:100) Sat D Analysis 1 Multiple Stability Analysis Method: Bishop Simplified Surface: Circular Sat D Results Critical Factor of Safety: 2.21 Project Sweet Valley Pit SS -1 - Reclamation Slope - Static File: P:\23038 CCWCD J2 Meining Famr\DRMS Permit\112 Permit\Slope Stability\Galena\S.V. Pit-SS1-Reclamation.gmf Edited: 5 Mar 2024 Processed: 5 Mar 2024 JET Consulting, Inc. 4900 4850 4800 4750 4700 4650 4600 4550 Cf742BOW 37 ) I f 0 50 100 150 200 250 300 350 400 450 500 550 600 _1 I GALENA Version 7.2 Licensed to: J & T Consulting Material Keys 1: Overburden/Clay (c:50 0:25 g:100) Sat D 2: Sand and Gravel (c:10 a:35 g:115) Sat D 3: Stable Claystone Bedrock (c:3000 0:0 8:120) Sat 0 4: Stable Siltstone Bedrock (c:3000 a:0 g:117) Sat 0 5: Stable Sandstone Bedrock (c:3000 0:0 9:115) Sat D 6: Slurry Wall (c:0 0:45 g:100) Sat D Analysis 1 Multiple Stability Analysis Method: Bishop Simplified surface: Circular Results Critical Factor of Safety: 1.76 Project Sweet Valley Pit SS -1 - Reclamation Slope - Pseudo Static File: P:\23038 CCWCD J2 Meining Fann\DRMS Permit\112 Permit\Slope Stability\Galena\S.V. Pit-SS1-Reclamation-Pseudo Static.gmf Edited: 5 Mar 2024 Processed: 5 Mar 2024 JuT Consulting, Ine. Material Keys 1: Overburden/Clay (c:50 e:25 g:100) Sat 0 4840 4820 4800 4780 4760 4740 4720 4700 4680 4660 4640 4620 50 100 150 0 GALENA Version 7,2 200 250 300 Licensed to: J & T Consulting 2: Sand and Gravel (c:10 0:35 g:115) Sat D 4: Stable Siltstone Bedrock (c:3000 0:0 g:117) Sat 6: Slurry Wall (c:0 e:45 g:100) Analysis 1 Multiple Stability Analysis Method: Bishop Simplified Surface: Circular Sat 0 Results Critical Factor of Safety: 2.53 Project Sweet Valley Pit SS -7S - Reclamation Slope - Static File: P:'23038 CCWCD J2 Meining Farm\DRMS Permit\112 Permit\Slope Stability\Galena \S.V Pit-SS7S-Reclamation.gmf Edited: 4 Mar 2024 Processed: 4 Mar 2024 •W J&T Consulting, Inc. 4840 4820 4800 4780 4760 4740 4720 4700 4680 4660 4640 4620 0 50 100 150 GALENA Version 7.2 200 250 300 Licensed to: J & T Consulting Material Keys 1: Overburden/Clay (c:50 0:25 g:100) Sate 2: Sand and Gravel (c:10 0:35 g:115) Sat f7 4: Stable Siltstone Bedrock (c:3000 0:0 g:117) Sat fJ 6: Slurry Wall (c:0 0:45 g:100) Analysis 1 Multiple Stability Analysis Method: Bishop Simplified Surface: Circular Results Critical Factor of Safety: Project Sweet Valley Pit SS -7S - Reclamation Slope - Pseudo Static File: P:\23038 CCWCD.12 Meining Farm\DRMS Permit\112 Permit\Slope Stability \ Galena \S.V. Pit-SS7S-Reclamation-Pseudo Static.gmf Sat 0 1.93 Edited: 4 Mar 2024 Processed: 4 Mar 2024 iJai Consulting, Inc. APPENDIX C Li JET Consulting, Inc. Central Colorado Water Conservancy District— Sweet Valley Pit Slope Stability Analysis Mining Conditions J&T Consulting, Inc. Central Colorado Water Conservancy District— Sweet Valley Pit Slope Stability Analysis GALENA 7.2 Analysis Results Version: 7.2.3.05 Licensee: J & T Consulting Project: Sweet Valley Pit File: P:\23038 CCWCD J2 Meining Farm\DRMS Permit\112 Permit\Slope Stability\Galena\S.V. Pit-SS1-Mining.gmf Processed: 05 Mar 2024 08:24:43 DATA: Analysis 1 - SS -1 - Mining Slope - Static Material Properties (6 materials) Material: 1 (Mohr -Coulomb Isotropic) - Overburden/Clay Cohesion Phi UnitWeight Ru Unsaturated: 50.00 25.0 100.00 Auto Saturated: 50.00 25.0 115.00 Auto Material: 2 (Mohr -Coulomb Isotropic) - Sand and Gravel Cohesion Phi UnitWeight Ru Unsaturated: 10.00 35.0 115.00 Auto Saturated: 10.00 35.0 130.00 Auto Material: 3 (Mohr -Coulomb Isotropic) - Stable Claystone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 120.00 Auto Saturated: 3000.00 0.0 135.00 Auto Material: 4 (Mohr -Coulomb Isotropic) - Stable Siltstone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 117.00 Auto Saturated: 3000.00 0.0 133.00 Auto Material: 5 (Mohr -Coulomb Isotropic) - Stable Sandstone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 115.00 Auto Saturated: 3000.00 0.0 128.00 Auto Material: 6 (Mohr -Coulomb Isotropic) - Slurry Wall Cohesion Phi UnitWeight Ru Unsaturated: 0.00 45.0 100.00 Auto Saturated: 0.00 45.0 110.00 Auto Water Properties Unit weight of water: 62.400 Unit weight of water/medium above ground: 62.400 Material Profiles (7 profiles) Profile: 1 (13 points) Material beneath: 1 - Overburden/Clay 0.00 4754.96 81.03 4754.96 118.00 4753.00 4753.63 229.99 4753.00 251.81 4753.00 288.62 4753.10 4753.19 321.07 4748.00 470.50 4698.19 600.00 4698.00 Profile: 2 (2 points) Material beneath: 6 - Slurry Wall 288.62 4753.10 291.62 4753.10 Profile: 3 (2 points) Material beneath: 2 - Sand and Gravel 0.00 4748.00 288.62 4748.00 Profile: 4 (3 points) Material beneath: 2 - Sand and Gravel 291.62 4748.00 321.07 4748.00 470.50 4697.35 Profile: 5 (3 points) Material beneath: 4 - Stable Siltstone Bedrock 0.00 4697.69 470.50 4697.69 600.00 4697.69 Profile: 6 (3 points) Material beneath: 3 - Stable Claystone Bedrock 0.00 4695.69 470.50 4695.69 600.00 4695.69 Profile: 7 (3 points) Material beneath: 5 - Stable Sandstone Bedrock 0.00 4694.69 470.50 4694.69 600.00 4694.69 Slope Surface (13 points) 0.00 4754.96 4753.63 229.99 4753.00 4753.19 321.07 4748.00 Phreatic Surface (5 points) 0.00 4698.00 Failure Surface 4727.00 81.03 251.81 470.50 4754.96 4753.00 4698.19 288.62 4727.00 118.00 288.62 600.00 4753.00 4753.10 4698.00 291.62 4698.19 170.00 291.62 170.00 291.62 470.50 Initial circular surface for critical search defined by: XL,XR,R Intersects: XL: 266.90 YL: 4753.04 XR: 470.50 YR: 4698.19 Centre: XC: 441.76 YC: 4996.81 Radius: R: 300.00 Variable Restraints Parameter descriptor: XL XR R Range of variation: 10.00 10.00 250.00 Trial positions within range: 20 20 50 4754.00 199.95 4753.10 305.51 4754.00 199.95 4753.10 305.51 4698.19 600.00 RESULTS: Analysis 1 - SS -1 - Mining Slope - Static Bishop Simplified Method of Analysis - Circular Failure Surface Critical Failure Surface Search using Multiple Circle Generation Techniques Initial failure surface approximation - Factor of Safety: 3.477 Analysis Summary There were: 18938 successful analyses from a total of 20001 trial failure surfaces 1063 analyses terminated due to unacceptable geometry Critical (minimum) Factor of Safety: 2.48 Results Summary - Lowest 99 Factor of Safety circles Circle X -Left Y -Left X -Right Y -Right X -Centre Y -Centre Radius FoS 1 271.90 4753.05 470.76 4698.19 480.98 5123.07 425.00 2.476 <-- Critical Surface 2 271.90 4753.05 470.24 4698.28 480.84 5123.15 425.00 2.476 3 271.90 4753.05 470.76 4698.19 479.59 5117.99 419.90 2.476 4 271.90 4753.05 470.24 4698.28 479.44 5118.07 419.90 2.477 5 271.90 4753.05 469.71 4698.45 480.54 5123.31 425.00 2.477 6 271.90 4753.05 470.76 4698.19 478.18 5112.92 414.80 2.477 7 271.90 4753.05 470.24 4698.28 478.04 5113.00 414.80 2.477 8 271.90 4753.05 469.71 4698.45 479.14 5118.25 419.90 2.478 9 271.90 4753.05 469.18 4698.63 480.24 5123.48 425.00 2.478 10 271.90 4753.05 470.76 4698.19 476.78 5107.84 409.69 2.478 11 271.90 4753.05 470.24 4698.28 476.64 5107.92 409.69 2.478 12 271.90 4753.05 469.71 4698.45 477.74 5113.17 414.80 2.478 13 271.90 4753.05 469.18 4698.63 478.84 5118.42 419.90 2.479 14 271.90 4753.05 468.66 4698.80 479.94 5123.65 425.00 2.479 15 271.90 4753.05 470.76 4698.19 475.38 5102.75 404.59 2.479 16 271.90 4753.05 470.24 4698.28 475.24 5102.84 404.59 2.479 17 271.90 4753.05 469.71 4698.45 476.34 5108.09 409.69 2.479 18 271.90 4753.05 469.18 4698.63 477.44 5113.34 414.80 2.480 19 271.90 4753.05 468.66 4698.80 478.54 5118.59 419.90 2.480 20 271.90 4753.05 468.13 4698.98 479.64 5123.82 425.00 2.480 21 271.90 4753.05 470.76 4698.19 473.98 5097.67 399.49 2.480 22 271.90 4753.05 469.71 4698.45 474.94 5103.01 404.59 2.480 23 271.90 4753.05 469.18 4698.63 476.04 5108.26 409.69 2.480 24 271.90 4753.05 470.24 4698.28 473.83 5097.75 399.49 2.480 25 271.90 4753.05 468.66 4698.80 477.14 5113.51 414.80 2.481 26 271.90 4753.05 468.13 4698.98 478.24 5118.76 419.90 2.481 27 271.90 4753.05 467.61 4699.15 479.34 5123.99 425.00 2.481 28 271.90 4753.05 470.76 4698.19 472.57 5092.57 394.39 2.481 29 271.90 4753.05 469.18 4698.63 474.64 5103.18 404.59 2.481 30 271.90 4753.05 469.71 4698.45 473.54 5097.92 399.49 2.481 31 271.90 4753.05 468.66 4698.80 475.74 5108.44 409.69 2.482 32 271.90 4753.05 470.24 4698.28 472.42 5092.66 394.39 2.482 33 271.90 4753.05 468.13 4698.98 476.84 5113.68 414.80 2.482 34 271.90 4753.05 467.61 4699.15 477.94 5118.93 419.90 2.482 35 271.90 4753.05 467.08 4699.33 479.03 5124.16 425.00 2.482 36 271.90 4753.05 468.66 4698.80 474.34 5103.36 404.59 2.482 37 271.90 4753.05 469.18 4698.63 473.24 5098.10 399.49 2.483 38 271.90 4753.05 468.13 4698.98 475.45 5108.61 409.69 2.483 39 271.90 4753.05 470.76 4698.19 471.16 5087.48 389.29 2.483 40 271.90 4753.05 469.71 4698.45 472.13 5092.83 394.39 2.483 41 271.90 4753.05 467.61 4699.15 476.54 5113.85 414.80 2.483 42 271.90 4753.05 470.24 4698.28 471.02 5087.56 389.29 2.483 43 271.90 4753.05 467.08 4699.33 477.64 5119.10 419.90 2.483 44 271.37 4753.05 470.76 4698.19 480.43 5123.08 425.00 2.483 45 271.90 4753.05 466.55 4699.51 478.73 5124.33 425.00 2.483 46 271.90 4753.05 468.66 4698.80 472.94 5098.27 399.49 2.484 47 271.90 4753.05 468.13 4698.98 474.05 5103.53 404.59 2.484 48 271.90 4753.05 469.18 4698.63 471.83 5093.01 394.39 2.484 49 271.90 4753.05 467.61 4699.15 475.15 5108.78 409.69 2.484 50 271.37 4753.05 470.24 4698.28 480.29 5123.16 425.00 2.484 51 271.90 4753.05 469.71 4698.45 470.72 5087.74 389.29 2.484 52 271.90 4753.05 467.08 4699.33 476.24 5114.02 414.80 2.484 53 271.90 4753.05 470.76 4698.19 469.76 5082.37 384.18 2.484 54 271.90 4753.05 466.55 4699.51 477.34 5119.27 419.90 2.484 55 271.90 4753.05 470.24 4698.28 469.61 5082.46 384.18 2.484 56 271.37 4753.05 470.76 4698.19 479.04 5118.01 419.90 2.484 57 271.90 4753.05 466.03 4699.68 478.43 5124.50 425.00 2.485 58 271.90 4753.05 468.13 4698.98 472.64 5098.44 399.49 2.485 59 271.90 4753.05 467.61 4699.15 473.75 5103.70 404.59 2.485 60 271.37 4753.05 470.24 4698.28 478.89 5118.09 419.90 2.485 61 271.90 4753.05 468.66 4698.80 471.54 5093.18 394.39 2.485 62 271.90 4753.05 467.08 4699.33 474.85 5108.95 409.69 2.485 63 271.90 4753.05 469.18 4698.63 470.43 5087.91 389.29 2.485 64 271.37 4753.05 469.71 4698.45 479.99 5123.33 425.00 2.485 65 271.90 4753.05 466.55 4699.51 475.94 5114.20 414.80 2.485 66 271.90 4753.05 469.71 4698.45 469.32 5082.64 384.18 2.485 67 271.37 4753.05 470.76 4698.19 477.64 5112.93 414.80 2.485 68 271.90 4753.05 470.76 4698.19 468.35 5077.26 379.08 2.485 69 271.37 4753.05 470.24 4698.28 477.50 5113.01 414.80 2.486 70 271.90 4753.05 467.61 4699.15 472.35 5098.62 399.49 2.486 71 271.90 4753.05 470.24 4698.28 468.20 5077.35 379.08 2.486 72 271.90 4753.05 468.13 4698.98 471.24 5093.35 394.39 2.486 73 271.90 4753.05 467.08 4699.33 473.45 5103.87 404.59 2.486 74 271.90 4753.05 468.66 4698.80 470.13 5088.09 389.29 2.486 75 271.37 4753.05 469.71 4698.45 478.59 5118.26 419.90 2.486 76 271.90 4753.05 469.18 4698.63 469.02 5082.81 384.18 2.486 77 271.37 4753.05 469.18 4698.63 479.69 5123.50 425.00 2.486 78 271.37 4753.05 470.76 4698.19 476.24 5107.85 409.69 2.486 79 271.90 4753.05 469.71 4698.45 467.91 5077.53 379.08 2.487 80 271.37 4753.05 470.24 4698.28 476.10 5107.93 409.69 2.487 81 271.90 4753.05 467.61 4699.15 470.95 5093.53 394.39 2.487 82 271.37 4753.05 469.71 4698.45 477.20 5113.18 414.80 2.487 83 271.90 4753.05 468.13 4698.98 469.84 5088.26 389.29 2.487 84 271.90 4753.05 470.76 4698.19 466.94 5072.15 373.98 2.487 85 271.90 4753.05 468.66 4698.80 468.73 5082.99 384.18 2.487 86 271.37 4753.05 469.18 4698.63 478.29 5118.43 419.90 2.487 87 271.90 4753.05 470.24 4698.28 466.79 5072.24 373.98 2.487 88 271.90 4753.05 471.29 4698.19 466.95 5072.14 373.98 2.487 89 271.37 4753.05 470.76 4698.19 474.84 5102.76 404.59 2.487 90 271.90 4753.05 469.18 4698.63 467.61 5077.71 379.08 2.487 91 271.37 4753.05 468.66 4698.80 479.39 5123.67 425.00 2.487 92 271.37 4753.05 470.24 4698.28 474.70 5102.85 404.59 2.488 93 271.37 4753.05 469.71 4698.45 475.80 5108.10 409.69 2.488 94 271.90 4753.05 473.92 4698.19 468.41 5077.23 379.08 2.488 95 271.90 4753.05 475.50 4698.18 469.84 5082.32 384.18 2.488 96 271.90 4753.05 469.71 4698.45 466.50 5072.42 373.98 2.488 97 271.37 4753.05 469.18 4698.63 476.90 5113.35 414.80 2.488 98 271.90 4753.05 468.13 4698.98 468.43 5083.16 384.18 2.488 99 271.90 4753.05 466.03 4699.68 477.03 5119.43 419.90 2.488 Critical Failure Surface (circle 1) Intersects: XL: 271.90 YL: 4753.05 XR: 470.76 YR: 4698.19 Centre: XC: 480.98 YC: 5123.07 Radius: R: 425.00 Generated failure surface: (20 points) 271.90 4753.05 281.52 4747.78 291.27 4742.76 4733.48 321.25 4729.23 331.46 4725.24 341.78 4721.51 4714.87 373.25 4711.95 383.89 4709.31 394.60 4706.94 4703.04 427.04 4701.50 437.94 4700.25 448.86 4699.28 4698.19 301.14 352.18 405.36 459.80 4737.99 4718.05 4704.85 4698.59 311.14 362.68 416.18 470.76 Slice Geometry and Properties - Critical Failure Surface (circle 1, 40 slices) Slice X -S Base PoreWater Normal Test X -Left Area Angle Width Length Matl Cohesion Phi Weight Force Stress Factor 1 271.90 5.86 28.7 4.61 5.26 1 50.00 25.0 585.55 0.00 105.08 1.03 2 276.51 17.56 28.7 4.61 5.26 1 50.00 25.0 1756.44 0.00 335.27 1.03 3 281.12 22.73 27.4 3.75 4.22 2 10.00 35.0 2328.49 0.00 539.76 0.98 4 284.87 30.02 27.3 3.75 4.22 2 10.00 35.0 3165.22 0.00 735.00 0.98 5 288.62 25.55 27.3 2.65 2.98 6 0.00 45.0 2555.30 0.00 799.40 0.93 6 291.27 57.01 25.8 4.94 5.48 2 10.00 35.0 6176.87 0.00 1098.87 0.98 7 296.20 68.94 25.8 4.94 5.48 2 10.00 35.0 7546.76 0.00 1342.96 0.98 8 301.14 70.63 24.3 4.37 4.79 2 10.00 35.0 7783.16 0.00 1578.44 0.97 9 305.51 98.49 24.3 5.63 6.17 2 10.00 35.0 10966.98 0.00 1726.54 0.97 10 311.14 89.64 22.8 4.97 5.39 2 10.00 35.0 10122.97 0.00 1820.06 0.97 11 316.10 91.78 22.8 4.97 5.39 2 10.00 35.0 10493.47 0.00 1886.77 0.97 12 321.07 97.95 21.4 5.20 5.58 2 10.00 35.0 11262.66 0.00 1950.12 0.97 13 326.27 99.49 21.3 5.20 5.58 2 10.00 35.0 11438.33 0.00 1981.13 0.97 14 331.46 99.90 19.9 5.16 5.48 2 10.00 35.0 11482.71 0.00 2018.81 0.96 15 336.62 100.64 19.9 5.16 5.48 2 10.00 35.0 11565.55 0.00 2033.40 0.96 16 341.78 101.91 18.4 5.20 5.48 2 10.00 35.0 11708.92 0.00 2055.60 0.96 17 346.98 101.88 18.4 5.20 5.48 2 10.00 35.0 11703.45 0.00 2054.58 0.96 18 352.18 102.30 16.9 5.25 5.48 2 10.00 35.0 11749.20 0.00 2061.05 0.96 19 357.43 101.49 16.9 5.25 5.48 2 10.00 35.0 11653.83 0.00 2044.31 0.96 20 0.96 21 0.96 22 0.96 23 0.96 24 0.96 25 0.96 26 0.97 27 0.97 28 0.97 29 0.97 30 0.97 31 0.97 32 0.97 33 0.97 34 0.98 35 0.98 36 0.98 37 0.98 38 0.99 39 0.99 40 0.99 362.68 101.03 15.4 5.29 5.48 2 10.00 35.0 11599.28 367.96 99.43 15.4 5.29 5.48 2 10.00 35.0 11412.30 373.25 98.09 13.9 5.32 5.48 2 10.00 35.0 11256.21 378.57 95.69 13.9 5.32 5.48 2 10.00 35.0 10977.22 383.89 93.45 12.5 5.35 5.48 2 10.00 35.0 10717.09 389.25 90.23 12.5 5.35 5.48 2 10.00 35.0 10344.56 394.60 87.08 11.0 5.38 5.48 2 10.00 35.0 9979.46 399.98 83.05 11.0 5.38 5.48 2 10.00 35.0 9513.34 405.36 78.99 9.5 5.41 5.48 2 10.00 35.0 9043.83 410.77 74.14 9.5 5.41 5.48 2 10.00 35.0 8483.52 416.18 69.16 8.0 5.43 5.48 2 10.00 35.0 7909.09 421.61 63.50 8.0 5.43 5.48 2 10.00 35.0 7255.09 427.04 57.62 6.6 5.45 5.48 2 10.00 35.0 6576.59 432.49 51.14 6.6 5.45 5.48 2 10.00 35.0 5828.36 437.94 44.38 5.1 5.46 5.48 2 10.00 35.0 5048.43 443.40 37.08 5.1 5.46 5.48 2 10.00 35.0 4206.74 448.86 29.45 3.6 5.47 5.48 2 10.00 35.0 3326.44 454.33 21.35 3.6 5.47 5.48 2 10.00 35.0 2392.22 459.80 10.16 2.1 3.94 3.94 2 10.00 35.0 1121.16 463.75 5.55 2.1 3.94 3.94 2 10.00 35.0 590.32 467.69 1.13 2.1 3.07 3.08 1 50.00 25.0 113.36 X -S Area: 2675.44 Path Length: 208.37 X -S Weight: 303740.50 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2034.56 2001.70 1975.39 1926.35 1883.02 1817.53 1756.67 1674.64 1596.00 1497.05 1400.20 1284.37 1168.82 1035.81 901.31 750.96 596.99 429.25 281.31 148.05 35.87 GALENA 7.2 Analysis Results Version: 7.2.3.05 Licensee: J & T Consulting Project: Sweet Valley Pit File: P:\23038 CCWCD J2 Meining Farm\DRMS Permit\112 Permit\Slope Stability\Galena\S.V. Pit-SS1-Mining-Pseudo Static.gmf Processed: 05 Mar 2024 08:28:08 DATA: Analysis 1 - SS -1 - Mining Slope - Pseudo Static Material Properties (6 materials) Material: 1 (Mohr -Coulomb Isotropic) - Overburden/Clay Cohesion Phi UnitWeight Ru Unsaturated: 50.00 25.0 100.00 Auto Saturated: 50.00 25.0 115.00 Auto Material: 2 (Mohr -Coulomb Isotropic) - Sand and Gravel Cohesion Phi UnitWeight Ru Unsaturated: 10.00 35.0 115.00 Auto Saturated: 10.00 35.0 130.00 Auto Material: 3 (Mohr -Coulomb Isotropic) - Stable Claystone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 120.00 Auto Saturated: 3000.00 0.0 135.00 Auto Material: 4 (Mohr -Coulomb Isotropic) - Stable Siltstone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 117.00 Auto Saturated: 3000.00 0.0 133.00 Auto Material: 5 (Mohr -Coulomb Isotropic) - Stable Sandstone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 115.00 Auto Saturated: 3000.00 0.0 128.00 Auto Material: 6 (Mohr -Coulomb Isotropic) - Slurry Wall Cohesion Phi UnitWeight Ru Unsaturated: 0.00 45.0 100.00 Auto Saturated: 0.00 45.0 110.00 Auto Water Properties Unit weight of water: 62.400 Unit weight of water/medium above ground: 62.400 Material Profiles (7 profiles) Profile: 1 (13 points) 0.00 4754.96 4753.63 229.99 4753.00 4753.19 321.07 4748.00 Profile: 2 (2 points) 288.62 4753.10 Profile: 3 (2 points) 0.00 4748.00 Profile: 4 (3 points) 291.62 4748.00 Profile: 5 (3 points) 0.00 4697.69 Profile: 6 (3 points) 0.00 4695.69 Profile: 7 (3 points) 0.00 4694.69 Slope Surface (13 points) 0.00 4754.96 4753.63 229.99 4753.00 4753.19 321.07 4748.00 Material beneath: 1 - Overburden/Clay 81.03 4754.96 118.00 251.81 4753.00 288.62 470.50 4698.19 600.00 Material beneath: 6 - Slurry Wall 291.62 4753.10 Material beneath: 2 - Sand and Gravel 288.62 4748.00 Material beneath: 2 - Sand and Gravel 321.07 4748.00 470.50 4697.35 Material beneath: 4 - Stable Siltstone Bedrock 470.50 4697.69 600.00 4697.69 Material beneath: 3 - Stable Claystone Bedrock 470.50 4695.69 600.00 4695.69 Material beneath: 5 - Stable Sandstone Bedrock 470.50 4694.69 600.00 4694.69 Phreatic Surface (5 points) 0.00 4698.00 Failure Surface 4727.00 81.03 251.81 470.50 4754.96 4753.00 4698.19 288.62 4727.00 118.00 288.62 600.00 4753.00 4753.10 4698.00 4753.00 4753.10 4698.00 291.62 4698.19 Initial circular surface for critical search defined by: XL,XR,R Intersects: XL: 266.90 YL: 4753.04 XR: 470.50 YR: Centre: XC: 441.76 YC: 4996.81 Radius: R: Earthquake Force Pseudo -static earthquake (seismic) coefficient: 0.070 Variable Restraints Parameter descriptor: XL XR R 170.00 4754.00 199.95 291.62 4753.10 170.00 4754.00 291.62 4753.10 470.50 4698.19 4698.19 300.00 305.51 199.95 305.51 600.00 Range of variation: 10.00 Trial positions within range: 20 20 50 10.00 250.00 RESULTS: Analysis 1 - SS -1 - Mining Slope - Pseudo Static Bishop Simplified Method of Analysis - Circular Failure Surface Critical Failure Surface Search using Multiple Circle Generation Techniques Initial failure surface approximation - Factor of Safety: 2.774 Analysis Summary There were: 18938 successful analyses from a total of 20001 trial failure surfaces 1063 analyses terminated due to unacceptable geometry Critical (minimum) Factor of Safety: 1.96 Results Summary - Lowest 99 Factor of Safety circles Circle X -Left Y -Left X -Right Y -Right X -Centre Y -Centre Radius FoS 1 271.90 4753.05 470.76 4698.19 480.98 5123.07 425.00 1.964 <-- Critical Surface 2 271.90 4753.05 470.24 4698.28 480.84 5123.15 425.00 1.964 3 271.90 4753.05 469.71 4698.45 480.54 5123.31 425.00 1.964 4 271.90 4753.05 470.76 4698.19 479.59 5117.99 419.90 1.964 5 271.90 4753.05 470.24 4698.28 479.44 5118.07 419.90 1.964 6 271.90 4753.05 469.18 4698.63 480.24 5123.48 425.00 1.965 7 271.90 4753.05 469.71 4698.45 479.14 5118.25 419.90 1.965 8 271.90 4753.05 470.76 4698.19 478.18 5112.92 414.80 1.965 9 271.90 4753.05 470.24 4698.28 478.04 5113.00 414.80 1.965 10 271.90 4753.05 468.66 4698.80 479.94 5123.65 425.00 1.966 11 271.90 4753.05 469.18 4698.63 478.84 5118.42 419.90 1.966 12 271.90 4753.05 469.71 4698.45 477.74 5113.17 414.80 1.966 13 271.90 4753.05 470.76 4698.19 476.78 5107.84 409.69 1.966 14 271.90 4753.05 470.24 4698.28 476.64 5107.92 409.69 1.966 15 271.90 4753.05 468.13 4698.98 479.64 5123.82 425.00 1.966 16 271.90 4753.05 468.66 4698.80 478.54 5118.59 419.90 1.966 17 271.90 4753.05 469.18 4698.63 477.44 5113.34 414.80 1.967 18 271.90 4753.05 469.71 4698.45 476.34 5108.09 409.69 1.967 19 271.90 4753.05 467.61 4699.15 479.34 5123.99 425.00 1.967 20 271.90 4753.05 468.13 4698.98 478.24 5118.76 419.90 1.967 21 271.90 4753.05 470.76 4698.19 475.38 5102.75 404.59 1.967 22 271.90 4753.05 470.24 4698.28 475.24 5102.84 404.59 1.967 23 271.90 4753.05 468.66 4698.80 477.14 5113.51 414.80 1.967 24 271.90 4753.05 469.18 4698.63 476.04 5108.26 409.69 1.967 25 271.90 4753.05 467.08 4699.33 479.03 5124.16 425.00 1.968 26 271.90 4753.05 467.61 4699.15 477.94 5118.93 419.90 1.968 27 271.90 4753.05 469.71 4698.45 474.94 5103.01 404.59 1.968 28 271.90 4753.05 468.13 4698.98 476.84 5113.68 414.80 1.968 29 271.90 4753.05 470.76 4698.19 473.98 5097.67 399.49 1.968 30 271.90 4753.05 468.66 4698.80 475.74 5108.44 409.69 1.968 31 271.90 4753.05 470.24 4698.28 473.83 5097.75 399.49 1.968 32 271.90 4753.05 466.55 4699.51 478.73 5124.33 425.00 1.968 33 271.90 4753.05 467.08 4699.33 477.64 5119.10 419.90 1.968 34 271.90 4753.05 469.18 4698.63 474.64 5103.18 404.59 1.968 35 271.90 4753.05 467.61 4699.15 476.54 5113.85 414.80 1.968 36 271.90 4753.05 468.13 4698.98 475.45 5108.61 409.69 1.969 37 271.90 4753.05 469.71 4698.45 473.54 5097.92 399.49 1.969 38 271.37 4753.05 470.76 4698.19 480.43 5123.08 425.00 1.969 39 271.90 4753.05 468.66 4698.80 474.34 5103.36 404.59 1.969 40 271.90 4753.05 466.03 4699.68 478.43 5124.50 425.00 1.969 41 271.90 4753.05 466.55 4699.51 477.34 5119.27 419.90 1.969 42 271.37 4753.05 470.24 4698.28 480.29 5123.16 425.00 1.969 43 271.90 4753.05 470.76 4698.19 472.57 5092.57 394.39 1.969 44 271.90 4753.05 467.08 4699.33 476.24 5114.02 414.80 1.969 45 271.90 4753.05 470.24 4698.28 472.42 5092.66 394.39 1.969 46 271.90 4753.05 467.61 4699.15 475.15 5108.78 409.69 1.969 47 271.90 4753.05 469.18 4698.63 473.24 5098.10 399.49 1.969 48 271.90 4753.05 468.13 4698.98 474.05 5103.53 404.59 1.970 49 271.37 4753.05 470.76 4698.19 479.04 5118.01 419.90 1.970 50 271.90 4753.05 469.71 4698.45 472.13 5092.83 394.39 1.970 51 271.90 4753.05 466.55 4699.51 475.94 5114.20 414.80 1.970 52 271.37 4753.05 469.71 4698.45 479.99 5123.33 425.00 1.970 53 271.90 4753.05 468.66 4698.80 472.94 5098.27 399.49 1.970 54 271.37 4753.05 470.24 4698.28 478.89 5118.09 419.90 1.970 55 271.90 4753.05 467.08 4699.33 474.85 5108.95 409.69 1.970 56 271.90 4753.05 467.61 4699.15 473.75 5103.70 404.59 1.970 57 271.90 4753.05 470.76 4698.19 471.16 5087.48 389.29 1.970 58 271.90 4753.05 470.24 4698.28 471.02 5087.56 389.29 1.970 59 271.90 4753.05 469.18 4698.63 471.83 5093.01 394.39 1.970 60 271.90 4753.05 468.13 4698.98 472.64 5098.44 399.49 1.971 61 271.37 4753.05 470.76 4698.19 477.64 5112.93 414.80 1.971 62 271.37 4753.05 469.18 4698.63 479.69 5123.50 425.00 1.971 63 271.37 4753.05 469.71 4698.45 478.59 5118.26 419.90 1.971 64 271.37 4753.05 470.24 4698.28 477.50 5113.01 414.80 1.971 65 271.90 4753.05 467.08 4699.33 473.45 5103.87 404.59 1.971 66 271.90 4753.05 469.71 4698.45 470.72 5087.74 389.29 1.971 67 271.90 4753.05 468.66 4698.80 471.54 5093.18 394.39 1.971 68 271.90 4753.05 467.61 4699.15 472.35 5098.62 399.49 1.971 69 271.37 4753.05 468.66 4698.80 479.39 5123.67 425.00 1.971 70 271.90 4753.05 470.76 4698.19 469.76 5082.37 384.18 1.971 71 271.90 4753.05 469.18 4698.63 470.43 5087.91 389.29 1.971 72 271.37 4753.05 469.18 4698.63 478.29 5118.43 419.90 1.971 73 271.90 4753.05 470.24 4698.28 469.61 5082.46 384.18 1.972 74 271.90 4753.05 468.13 4698.98 471.24 5093.35 394.39 1.972 75 271.37 4753.05 470.76 4698.19 476.24 5107.85 409.69 1.972 76 271.37 4753.05 469.71 4698.45 477.20 5113.18 414.80 1.972 77 271.37 4753.05 470.24 4698.28 476.10 5107.93 409.69 1.972 78 271.90 4753.05 466.03 4699.68 477.03 5119.43 419.90 1.972 79 271.90 4753.05 465.50 4699.86 478.12 5124.67 425.00 1.972 80 271.90 4753.05 468.66 4698.80 470.13 5088.09 389.29 1.972 81 271.90 4753.05 469.71 4698.45 469.32 5082.64 384.18 1.972 82 271.90 4753.05 467.61 4699.15 470.95 5093.53 394.39 1.972 83 271.37 4753.05 468.13 4698.98 479.08 5123.84 425.00 1.972 84 271.37 4753.05 468.66 4698.80 477.99 5118.60 419.90 1.972 85 271.37 4753.05 469.18 4698.63 476.90 5113.35 414.80 1.972 86 271.37 4753.05 469.71 4698.45 475.80 5108.10 409.69 1.973 87 271.37 4753.05 470.76 4698.19 474.84 5102.76 404.59 1.973 88 271.90 4753.05 469.18 4698.63 469.02 5082.81 384.18 1.973 89 271.90 4753.05 468.13 4698.98 469.84 5088.26 389.29 1.973 90 271.90 4753.05 465.50 4699.86 476.73 5119.60 419.90 1.973 91 271.90 4753.05 466.03 4699.68 475.64 5114.37 414.80 1.973 92 271.90 4753.05 470.76 4698.19 468.35 5077.26 379.08 1.973 93 271.90 4753.05 466.55 4699.51 474.55 5109.12 409.69 1.973 94 271.90 4753.05 470.24 4698.28 468.20 5077.35 379.08 1.973 95 271.37 4753.05 470.24 4698.28 474.70 5102.85 404.59 1.973 96 271.37 4753.05 467.61 4699.15 478.78 5124.01 425.00 1.973 97 271.37 4753.05 468.13 4698.98 477.69 5118.77 419.90 1.973 98 271.37 4753.05 468.66 4698.80 476.60 5113.52 414.80 1.973 99 270.85 4753.05 470.76 4698.19 479.88 5123.09 425.00 1.973 Critical Failure Surface (circle 1) Intersects: XL: 271.90 YL: 4753.05 XR: 470.76 YR: 4698.19 Centre: XC: 480.98 YC: 5123.07 Radius: R: 425.00 Generated failure surface: (20 points) 271.90 4753 05 281.52 4747.78 291.27 4742.76 301.14 4737.99 311.14 4733.48 321.25 4729.23 331.46 4725.24 341.78 4721.51 352.18 4718.05 362.68 4714.87 373.25 4703.04 427.04 4698.19 4711.95 4701.50 383.89 4709.31 437.94 4700.25 394.60 4706.94 405.36 4704.85 416.18 448.86 4699.28 459.80 4698.59 470.76 Slice Geometry and Properties - Critical Failure Surface (circle 1, 40 slices) Slice X -S Base PoreWater Normal Test X -Left Area Angle Width Length Matl Cohesion Phi Weight Force Stress Factor 1 271.90 5.86 28.7 4.61 5.26 1 50.00 25.0 585.55 0.00 100.02 1.01 2 276.51 17.56 28.7 4.61 5.26 1 50.00 25.0 1756.44 0.00 324.73 1.01 3 281.12 22.73 27.4 3.75 4.22 2 10.00 35.0 2328.49 0.00 521.88 0.95 4 284.87 30.02 27.3 3.75 4.22 2 10.00 35.0 3165.22 0.00 710.95 0.95 5 288.62 25.55 27.3 2.65 2.98 6 0.00 45.0 2555.30 0.00 765.05 0.89 6 291.27 57.01 25.8 4.94 5.48 2 10.00 35.0 6176.87 0.00 1065.06 0.95 7 296.20 68.94 25.8 4.94 5.48 2 10.00 35.0 7546.76 0.00 1301.73 0.95 8 301.14 70.63 24.3 4.37 4.79 2 10.00 35.0 7783.16 0.00 1532.77 0.95 9 305.51 98.49 24.3 5.63 6.17 2 10.00 35.0 10966.98 0.00 1676.62 0.95 10 311.14 89.64 22.8 4.97 5.39 2 10.00 35.0 10122.97 0.00 1770.57 0.94 11 316.10 91.78 22.8 4.97 5.39 2 10.00 35.0 10493.47 0.00 1835.49 0.94 12 321.07 97.95 21.4 5.20 5.58 2 10.00 35.0 11262.66 0.00 1900.33 0.94 13 326.27 99.49 21.3 5.20 5.58 2 10.00 35.0 11438.33 0.00 1930.68 0.94 14 331.46 99.90 19.9 5.16 5.48 2 10.00 35.0 11482.71 0.00 1970.83 0.94 15 336.62 100.64 19.9 5.16 5.48 2 10.00 35.0 11565.55 0.00 1985.08 0.94 16 341.78 101.91 18.4 5.20 5.48 2 10.00 35.0 11708.92 0.00 2010.26 0.94 17 346.98 101.88 18.4 5.20 5.48 2 10.00 35.0 11703.45 0.00 2009.25 0.94 18 0.94 19 0.94 20 0.94 21 0.94 22 0.95 23 0.95 24 0.95 25 0.95 26 0.95 27 0.95 28 0.96 29 0.96 30 0.96 31 0.96 32 0.97 33 0.97 34 0.97 35 0.97 36 0.98 37 0.98 38 0.99 39 0.99 352.18 102.30 16.9 5.25 5.48 2 10.00 35.0 11749.20 0.00 357.43 101.49 16.9 5.25 5.48 2 10.00 35.0 11653.83 0.00 362.68 101.03 15.4 5.29 5.48 2 10.00 35.0 11599.28 0.00 367.96 99.43 15.4 5.29 5.48 2 10.00 35.0 11412.30 0.00 373.25 98.09 13.9 5.32 5.48 2 10.00 35.0 11256.21 0.00 378.57 95.69 13.9 5.32 5.48 2 10.00 35.0 10977.22 0.00 383.89 93.45 12.5 5.35 5.48 2 10.00 35.0 10717.09 0.00 389.25 90.23 12.5 5.35 5.48 2 10.00 35.0 10344.56 0.00 394.60 87.08 11.0 5.38 5.48 2 10.00 35.0 9979.46 0.00 399.98 83.05 11.0 5.38 5.48 2 10.00 35.0 9513.34 0.00 405.36 78.99 9.5 5.41 5.48 2 10.00 35.0 9043.83 0.00 410.77 74.14 9.5 5.41 5.48 2 10.00 35.0 8483.52 0.00 416.18 69.16 8.0 5.43 5.48 2 10.00 35.0 7909.09 0.00 421.61 63.50 8.0 5.43 5.48 2 10.00 35.0 7255.09 0.00 427.04 57.62 6.6 5.45 5.48 2 10.00 35.0 6576.59 0.00 432.49 51.14 6.6 5.45 5.48 2 10.00 35.0 5828.36 0.00 437.94 44.38 5.1 5.46 5.48 2 10.00 35.0 5048.43 0.00 443.40 37.08 5.1 5.46 5.48 2 10.00 35.0 4206.74 0.00 448.86 29.45 3.6 5.47 5.48 2 10.00 35.0 3326.44 0.00 454.33 21.35 3.6 5.47 5.48 2 10.00 35.0 2392.22 0.00 459.80 10.16 2.1 3.94 3.94 2 10.00 35.0 1121.16 0.00 463.75 5.55 2.1 3.94 3.94 2 10.00 35.0 590.32 0.00 2019.09 2002.69 1996.61 1964.35 1941.92 1893.70 1854.34 1789.85 1732.95 1652.02 1577.24 1479.42 1386.19 1271.50 1159.19 1027.27 895.50 746.10 594.22 427.24 280.52 147.62 40 467.69 1.13 2.1 3.07 3.08 0.99 X -S Area: 50.00 25.0 113.36 2675.44 Path Length: 208.37 X -S Weight: 303740.50 0.00 35.61 GALENA 7.2 Analysis Results Version: 7.2.3.05 Licensee: J & T Consulting Project: Sweet Valley Pit File: P:\23038 CCWCD J2 Meining Farm\DRMS Permit\112 Permit\Slope Stability\Galena\S.V. Pit-SS2-Mining.gmf Processed: 05 Mar 2024 08:44:44 DATA: Analysis 1 - SS -2 - Mining Slope - Static Material Properties (6 materials) Material: 1 (Mohr -Coulomb Isotropic) - Overburden/Clay Cohesion Phi UnitWeight Ru Unsaturated: 50.00 25.0 100.00 Auto Saturated: 50.00 25.0 115.00 Auto Material: 2 (Mohr -Coulomb Isotropic) - Sand and Gravel Cohesion Phi UnitWeight Ru Unsaturated: 10.00 35.0 115.00 Auto Saturated: 10.00 35.0 130.00 Auto Material: 3 (Mohr -Coulomb Isotropic) - Stable Claystone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 120.00 Auto Saturated: 3000.00 0.0 135.00 Auto Material: 4 (Mohr -Coulomb Isotropic) - Stable Siltstone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 117.00 Auto Saturated: 3000.00 0.0 133.00 Auto Material: 5 (Mohr -Coulomb Isotropic) - Stable Sandstone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 115.00 Auto Saturated: 3000.00 0.0 128.00 Auto Material: 6 (Mohr -Coulomb Isotropic) - Slurry Wall Cohesion Phi UnitWeight Ru Unsaturated: 0.00 45.0 100.00 Auto Saturated: 0.00 45.0 110.00 Auto Water Properties Unit weight of water: 62.400 Unit weight of water/medium above ground: 62.400 Material Profiles (6 profiles) Profile: 1 (10 points) Material beneath: 1 - Overburden/Clay 0.00 4753.00 4751.99 232.61 4751.94 4749.50 Profile: 2 (2 points) 261.27 4751.86 Profile: 3 (2 points) 0.00 4749.50 Profile: 4 (4 points) 264.27 4749.50 Profile: 5 (4 points) 0.00 4697.04 Profile: 6 (4 points) 0.00 4688.50 Slope Surface (12 points) 0.00 4753.00 4751.99 232.61 4751.94 4749.50 440.55 4697.35 29.88 4754.00 128.82 4754.00 261.27 4751.86 264.27 4751.86 Material beneath: 6 - Slurry Wall 264.27 4751.86 Material beneath: 2 - Sand and Gravel 261.27 4749.50 Material beneath: 2 - Sand and Gravel 284.10 4749.50 440.55 4697.35 Material beneath: 3 - Stable Claystone Bedrock 262.77 4697.05 440.55 4697.35 Material beneath: 5 - Stable Sandstone Bedrock 262.77 4688.50 440.55 4688.50 Phreatic Surface (5 points) 0.00 4697.00 Failure Surface 4733.50 29.88 261.27 600.00 4754.00 4751.86 4697.00 261.27 4733.50 128.82 4754.00 264.27 4751.86 264.27 4697.35 Initial circular surface for critical search defined by: XL,XR,R Intersects: XL: 230.00 YL: 4751.95 XR: 440.55 YR: Centre: XC: 418.78 YC: 5046.67 Radius: R: Variable Restraints Parameter descriptor: Range of variation: Trial positions within range: XL 10.00 20 XR 10.00 20 RESULTS: Analysis 1 - SS -2 - Mining Slope - Static R 300.00 50 200.04 277.37 4752.00 213.50 4751.83 284.10 600.00 4697.00 600.00 4697.00 600.00 4688.50 200.04 4752.00 277.37 4751.83 440.55 4697.35 4697.35 350.00 213.50 284.10 600.00 Bishop Simplified Method of Analysis - Circular Failure Surface Critical Failure Surface Search using Multiple Circle Generation Techniques Initial failure surface approximation - Factor of Safety: 3.603 Analysis Summary There were: 17806 successful analyses from a total of 20001 trial failure surfaces 2195 analyses terminated due to unacceptable geometry Critical (minimum) Factor of Safety: 2.57 Results Summary - Lowest 99 Factor of Safety circles Circle X -Left Y -Left X -Right Y -Right X -Centre Y -Centre Radius FoS 1 235.00 4751.93 440.81 4697.35 463.14 5196.85 500.00 2.569 <-- Critical Surface 2 235.00 4751.93 440.81 4697.35 461.53 5190.79 493.88 2.569 3 235.00 4751.93 440.29 4697.44 463.00 5196.92 500.00 2.570 4 235.00 4751.93 440.81 4697.35 459.93 5184.73 487.76 2.570 5 235.00 4751.93 440.29 4697.44 461.39 5190.86 493.88 2.570 6 235.00 4751.93 440.81 4697.35 458.32 5178.66 481.63 2.570 7 235.00 4751.93 440.29 4697.44 459.79 5184.80 487.76 2.570 8 235.00 4751.93 440.81 4697.35 456.71 5172.59 475.51 2.571 9 235.00 4751.93 440.29 4697.44 458.18 5178.74 481.63 2.571 10 235.00 4751.93 439.76 4697.61 462.68 5197.09 500.00 2.571 11 235.00 4751.93 440.81 4697.35 455.10 5166.52 469.39 2.571 12 235.00 4751.93 440.29 4697.44 456.56 5172.67 475.51 2.572 13 235.00 4751.93 439.76 4697.61 461.07 5191.03 493.88 2.572 14 235.00 4751.93 440.81 4697.35 453.48 5160.44 463.27 2.572 15 235.00 4751.93 440.29 4697.44 454.95 5166.60 469.39 2.572 16 235.00 4751.93 439.76 4697.61 459.46 5184.97 487.76 2.572 17 235.00 4751.93 439.76 4697.61 457.85 5178.91 481.63 2.573 18 235.00 4751.93 440.81 4697.35 451.87 5154.36 457.14 2.573 19 235.00 4751.93 440.29 4697.44 453.34 5160.52 463.27 2.573 20 235.00 4751.93 439.23 4697.79 462.35 5197.25 500.00 2.573 21 235.00 4751.93 439.76 4697.61 456.24 5172.84 475.51 2.573 22 235.00 4751.93 439.23 4697.79 460.75 5191.20 493.88 2.573 23 235.00 4751.93 440.29 4697.44 451.72 5154.44 457.14 2.574 24 235.00 4751.93 440.81 4697.35 450.26 5148.27 451.02 2.574 25 235.00 4751.93 439.76 4697.61 454.63 5166.77 469.39 2.574 26 235.00 4751.93 439.23 4697.79 459.14 5185.14 487.76 2.574 27 235.00 4751.93 440.29 4697.44 450.11 5148.35 451.02 2.574 28 235.00 4751.93 439.23 4697.79 457.53 5179.07 481.63 29 235.00 4751.93 440.81 4697.35 448.64 5142.18 444.90 30 235.00 4751.93 439.76 4697.61 453.02 5160.69 463.27 31 235.00 4751.93 438.71 4697.96 462.03 5197.42 500.00 32 235.00 4751.93 439.23 4697.79 455.92 5173.01 475.51 33 235.00 4751.93 440.29 4697.44 448.49 5142.26 444.90 34 235.00 4751.93 439.76 4697.61 451.41 5154.61 457.14 35 235.00 4751.93 438.71 4697.96 460.42 5191.36 493.88 36 235.00 4751.93 440.81 4697.35 447.02 5136.08 438.78 37 234.47 4751.93 440.81 4697.35 462.57 5196.88 500.00 38 235.00 4751.93 439.23 4697.79 454.32 5166.93 469.39 39 235.00 4751.93 438.71 4697.96 458.82 5185.30 487.76 40 234.47 4751.93 440.81 4697.35 460.96 5190.82 493.88 41 235.00 4751.93 439.76 4697.61 449.79 5148.52 451.02 42 235.00 4751.93 438.71 4697.96 457.21 5179.24 481.63 43 235.00 4751.93 440.29 4697.44 446.87 5136.16 438.78 44 234.47 4751.93 440.29 4697.44 462.43 5196.95 500.00 45 235.00 4751.93 439.23 4697.79 452.70 5160.86 463.27 46 234.47 4751.93 440.81 4697.35 459.36 5184.75 487.76 47 235.00 4751.93 440.81 4697.35 445.41 5129.98 432.65 48 235.00 4751.93 438.18 4698.14 461.70 5197.59 500.00 49 234.47 4751.93 440.29 4697.44 460.82 5190.89 493.88 50 235.00 4751.93 438.71 4697.96 455.60 5173.17 475.51 51 234.47 4751.93 440.81 4697.35 457.76 5178.68 481.63 52 235.00 4751.93 439.76 4697.61 448.18 5142.43 444.90 53 235.00 4751.93 439.23 4697.79 451.09 5154.78 457.14 54 235.00 4751.93 438.18 4698.14 460.10 5191.53 493.88 55 234.47 4751.93 440.29 4697.44 459.22 5184.83 487.76 56 235.00 4751.93 440.29 4697.44 445.25 5130.06 432.65 57 235.00 4751.93 438.71 4697.96 453.99 5167.10 469.39 58 234.47 4751.93 440.81 4697.35 456.15 5172.61 475.51 59 235.00 4751.93 438.18 4698.14 458.49 5185.47 487.76 60 235.00 4751.93 440.81 4697.35 443.79 5123.87 426.53 61 234.47 4751.93 440.29 4697.44 457.61 5178.76 481.63 62 235.00 4751.93 439.23 4697.79 449.48 5148.69 451.02 63 235.00 4751.93 439.76 4697.61 446.56 5136.34 438.78 64 234.47 4751.93 439.76 4697.61 462.10 5197.11 500.00 65 235.00 4751.93 438.18 4698.14 456.89 5179.41 481.63 66 235.00 4751.93 438.71 4697.96 452.39 5161.03 463.27 67 234.47 4751.93 440.81 4697.35 454.54 5166.54 469.39 68 234.47 4751.93 440.29 4697.44 456.01 5172.69 475.51 69 235.00 4751.93 440.29 4697.44 443.63 5123.96 426.53 70 234.47 4751.93 439.76 4697.61 460.50 5191.06 493.88 71 235.00 4751.93 437.66 4698.31 461.37 5197.75 500.00 72 235.00 4751.93 438.18 4698.14 455.28 5173.34 475.51 2.574 2.574 2.575 2.575 2.575 2.575 2.575 2.575 2.575 2.575 2.576 2.576 2.576 2.576 2.576 2.576 2.576 2.576 2.576 2.576 2.577 2.577 2.577 2.577 2.577 2.577 2.577 2.577 2.577 2.577 2.577 2.577 2.578 2.578 2.578 2.578 2.578 2.578 2.578 2.578 2.578 2.578 2.578 2.578 2.578 73 235.00 4751.93 439.23 4697.79 447.86 5142.60 444.90 2.579 74 235.00 4751.93 438.71 4697.96 450.77 5154.95 457.14 2.579 75 234.47 4751.93 440.81 4697.35 452.93 5160.46 463.27 2.579 76 235.00 4751.93 441.34 4697.35 442.16 5117.76 420.41 2.579 77 235.00 4751.93 440.81 4697.35 442.16 5117.76 420.41 2.579 78 234.47 4751.93 440.29 4697.44 454.40 5166.61 469.39 2.579 79 234.47 4751.93 439.76 4697.61 458.90 5184.99 487.76 2.579 80 235.00 4751.93 437.66 4698.31 459.77 5191.70 493.88 2.579 81 235.00 4751.93 439.76 4697.61 444.94 5130.24 432.65 2.579 82 235.00 4751.93 438.18 4698.14 453.68 5167.27 469.39 2.579 83 235.00 4751.93 437.66 4698.31 458.17 5185.64 487.76 2.579 84 234.47 4751.93 439.76 4697.61 457.29 5178.93 481.63 2.579 85 235.00 4751.93 438.71 4697.96 449.16 5148.86 451.02 2.579 86 234.47 4751.93 440.81 4697.35 451.32 5154.37 457.14 2.579 87 234.47 4751.93 440.29 4697.44 452.79 5160.53 463.27 2.579 88 235.00 4751.93 439.23 4697.79 446.25 5136.51 438.78 2.579 89 235.00 4751.93 440.29 4697.44 442.01 5117.84 420.41 2.580 90 235.00 4751.93 438.18 4698.14 452.07 5161.20 463.27 2.580 91 234.47 4751.93 439.23 4697.79 461.78 5197.28 500.00 2.580 92 235.00 4751.93 437.66 4698.31 456.57 5179.58 481.63 2.580 93 234.47 4751.93 439.76 4697.61 455.69 5172.86 475.51 2.580 94 235.00 4751.93 439.76 4697.61 443.32 5124.13 426.53 2.580 95 235.00 4751.93 441.34 4697.35 440.54 5111.63 414.29 2.580 96 235.00 4751.93 440.81 4697.35 440.54 5111.64 414.29 2.580 97 234.47 4751.93 439.23 4697.79 460.18 5191.22 493.88 2.580 98 234.47 4751.93 440.29 4697.44 451.18 5154.45 457.14 2.580 99 235.00 4751.93 437.66 4698.31 454.96 5173.51 475.51 2.580 Critical Failure Surface (circle 1) Intersects: XL: 235.00 YL: 4751.93 XR: 440.81 YR: 4697.35 Centre: XC: 463.14 YC: 5196.85 Radius: R: 500.00 Generated failure surface: (20 points) 235.00 4751.93 245.11 4746.89 255.32 4742.08 265.65 4737.51 4733.16 286.59 4729.06 297.20 4725.19 307.90 4721.56 318.67 4718.18 4715.04 340.43 4712.14 351.41 4709.49 362.45 4707.09 373.53 4704.95 4703.05 395.84 4701.40 407.04 4700.01 418.28 4698.87 429.54 4697.98 4697.35 Slice Geometry and Properties - Critical Failure Surface (circle 1, 40 slices) 276.07 329.52 384.67 440.81 Slice X -S Base PoreWater Normal Test X -Left Area Angle Width Length Matl Cohesion Phi Weight Force Stress Factor 1 235.00 5.90 26.5 4.88 5.45 1 50.00 25.0 590.45 0.00 102.05 1.02 2 239.88 19.42 26.5 5.23 5.84 2 10.00 35.0 2043.72 0.00 342.53 0.98 3 245.11 31.71 25.2 5.11 5.65 2 10.00 35.0 3462.38 0.00 599.03 0.98 4 250.22 43.92 25.2 5.11 5.65 2 10.00 35.0 4868.27 0.00 842.93 0.98 5 255.32 66.01 23.9 5.95 6.50 2 10.00 35.0 7380.10 0.00 1105.82 0.98 6 261.27 39.23 23.9 3.00 3.28 6 0.00 45.0 3923.14 0.00 1115.23 0.93 7 264.27 19.35 23.9 1.38 1.51 2 10.00 35.0 2176.75 0.00 1408.02 0.98 8 265.65 80.42 22.6 5.21 5.65 2 10.00 35.0 9064.67 0.00 1560.30 0.97 9 270.86 91.68 22.6 5.21 5.65 2 10.00 35.0 10360.18 0.00 1783.49 0.97 10 276.07 24.55 21.3 1.30 1.39 2 10.00 35.0 2778.15 0.00 1933.55 0.97 11 277.37 130.03 21.3 6.73 7.22 2 10.00 35.0 14836.12 0.00 1991.11 0.97 12 284.10 48.70 21.3 2.49 2.68 2 10.00 35.0 5600.42 0.00 2029.66 0.97 13 286.59 104.48 20.0 5.30 5.65 2 10.00 35.0 12015.17 0.00 2058.88 0.97 14 291.90 105.36 20.0 5.30 5.65 2 10.00 35.0 12116.15 0.00 2076.24 0.97 15 297.20 106.72 18.7 5.35 5.65 2 10.00 35.0 12273.25 0.00 2099.75 0.97 16 302.55 106.89 18.7 5.35 5.65 2 10.00 35.0 12292.69 0.00 2103.14 0.97 17 307.90 107.49 17.4 5.39 5.65 2 10.00 35.0 12361.37 0.00 2112.59 0.97 18 313.28 106.93 17.4 5.39 5.65 2 10.00 35.0 12297.48 0.00 2101.67 0.97 19 318.67 106.74 16.1 5.42 5.65 2 10.00 35.0 12275.35 0.00 2096.68 0.96 20 324.09 105.45 16.1 5.42 5.65 2 10.00 35.0 12127.03 0.00 2071.34 0.96 21 0.96 22 0.96 23 0.97 24 0.97 25 0.97 26 0.97 27 0.97 28 0.97 29 0.97 30 0.97 31 0.97 32 0.97 33 0.97 34 0.97 35 0.98 36 0.98 37 0.98 38 0.98 39 0.99 40 0.99 329.52 104.45 14.9 5.46 5.65 2 10.00 35.0 12012.28 334.98 102.43 14.9 5.46 5.65 2 10.00 35.0 11779.05 340.43 100.60 13.6 5.49 5.65 2 10.00 35.0 11569.20 345.92 97.83 13.6 5.49 5.65 2 10.00 35.0 11249.88 351.41 95.17 12.3 5.52 5.65 2 10.00 35.0 10944.88 356.93 91.65 12.3 5.52 5.65 2 10.00 35.0 10539.37 362.45 88.15 11.0 5.54 5.65 2 10.00 35.0 10137.63 367.99 83.87 11.0 5.54 5.65 2 10.00 35.0 9644.94 373.53 79.54 9.7 5.57 5.65 2 10.00 35.0 9147.13 379.10 74.50 9.7 5.57 5.65 2 10.00 35.0 8567.03 384.67 69.33 8.4 5.59 5.65 2 10.00 35.0 7973.27 390.25 63.53 8.4 5.59 5.65 2 10.00 35.0 7305.82 395.84 57.54 7.1 5.60 5.65 2 10.00 35.0 6616.68 401.44 50.97 7.1 5.60 5.65 2 10.00 35.0 5861.53 407.04 44.15 5.8 5.62 5.65 2 10.00 35.0 5077.67 412.66 36.84 5.8 5.62 5.65 2 10.00 35.0 4236.07 418.28 29.21 4.5 5.63 5.65 2 10.00 35.0 3359.67 423.91 21.14 4.5 5.63 5.65 2 10.00 35.0 2431.64 429.54 12.49 3.2 5.48 5.49 2 10.00 35.0 1436.79 435.02 4.15 3.2 5.79 5.80 2 10.00 35.0 477.35 X -S Area: 2758..55 Path Length: 214.57 X -S Weight: 315210.72 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2051.53 2011.72 1976.75 1922.21 1871.89 1802.46 1736.35 1651.89 1569.72 1470.13 1371.66 1256.78 1141.65 1011.30 879.18 733.38 584.00 422.61 258.02 80.92 GALENA 7.2 Analysis Results Version: 7.2.3.05 Licensee: J & T Consulting Project: Sweet Valley Pit File: P:\23038 CCWCD J2 Meining Farm\DRMS Permit\112 Permit\Slope Stability\Galena\S.V. Pit-SS2-Mining-Pseudo Static.gmf Processed: 05 Mar 2024 08:47:10 DATA: Analysis 1 - SS -2 - Mining Slope - Pseudo Static Material Properties (6 materials) Material: 1 (Mohr -Coulomb Isotropic) - Overburden/Clay Cohesion Phi UnitWeight Unsaturated: 50.00 25.0 100.00 Saturated: 50.00 25.0 115.00 Material: 2 (Mohr -Coulomb Isotropic) - Sand Cohesion Phi UnitWeight Unsaturated: 10.00 35.0 115.00 Saturated: 10.00 35.0 130.00 Material: 3 (Mohr -Coulomb Isotropic) - Stable Cohesion Phi UnitWeight Unsaturated: 3000.00 0.0 120.00 Saturated: 3000.00 0.0 135.00 Material: 4 (Mohr -Coulomb Isotropic) - Stable Cohesion Phi UnitWeight Unsaturated: 3000.00 0.0 117.00 Saturated: 3000.00 0.0 133.00 Material: 5 (Mohr -Coulomb Isotropic) - Stable Cohesion Phi UnitWeight Unsaturated: 3000.00 0.0 115.00 Saturated: 3000.00 0.0 128.00 Material: 6 (Mohr -Coulomb Isotropic) - Slurry Cohesion Phi UnitWeight Unsaturated: 0.00 45.0 100.00 Saturated: 0.00 45.0 110.00 Water Properties Ru Auto Auto and Gravel Ru Auto Auto Claystone Ru Auto Auto Siltstone Ru Auto Auto Sandstone Ru Auto Auto Wall Ru Auto Auto Bedrock Bedrock Bedrock Unit weight of water: 62.400 Unit weight of water/medium above ground: 62.400 Material Profiles (6 profiles) Profile: 1 (10 points) 0.00 4753.00 4751.99 232.61 4751.94 4749.50 Profile: 2 (2 points) 261.27 4751.86 Profile: 3 (2 points) 0.00 4749.50 Profile: 4 (4 points) 264.27 4749.50 Profile: 5 (4 points) 0.00 4697.04 Profile: 6 (4 points) 0.00 4688.50 Slope Surface (12 points) 0.00 4753.00 4751.99 232.61 4751.94 4749.50 440.55 4697.35 Material beneath: 1 - Overburden/Clay 29.88 4754.00 128.82 261.27 4751.86 4754.00 264.27 4751.86 Material beneath: 6 - Slurry wall 264.27 4751.86 Material beneath: 2 - Sand and Gravel 261.27 4749.50 Material beneath: 2 - Sand and Gravel 284.10 4749.50 440.55 4697.35 Material beneath: 3 - Stable Claystone Bedrock 262.77 4697.05 440.55 4697.35 Material beneath: 5 - Stable Sandstone Bedrock 262.77 4688.50 440.55 4688.50 Phreatic Surface (5 points) 0.00 4697.00 Failure Surface 4733.50 29.88 261.27 600.00 4754.00 4751.86 4697.00 261.27 4733.50 128.82 4754.00 264.27 4751.86 264.27 4697.35 Initial circular surface for critical search defined by: XL,XR,R Intersects: XL: 230.00 Centre: XC: 418.78 Earthquake Force YL: YC: 4751.95 XR: 440.55 YR: 5046.67 Radius: R: Pseudo -static earthquake (seismic) coefficient: 0.070 Variable Restraints Parameter descriptor: Range of variation: Trial positions within range: XL 10.00 20 XR 10.00 20 R 300.00 50 200.04 4752.00 213.50 277.37 4751.83 600.00 4697.00 600.00 4697.00 600.00 4688.50 200.04 4752.00 277.37 4751.83 440.55 4697.35 4697.35 350.00 284.10 213.50 284.10 600.00 RESULTS: Analysis 1 - SS -2 - Mining Slope - Pseudo Static Bishop Simplified Method of Analysis - Circular Failure Surface Critical Failure Surface Search using Multiple Circle Generation Techniques Initial failure surface approximation - Factor of Safety: 2.855 Analysis Summary There were: 17806 successful analyses from a total of 20001 trial failure surfaces 2195 analyses terminated due to unacceptable geometry Critical (minimum) Factor of Safety: 2.02 Results Summary - Lowest 99 Factor of Safety circles Circle X -Left Y -Left X -Right Y -Right X -Centre Y -Centre Radius FoS 1 235.00 4751.93 440.81 4697.35 463.14 5196.85 500.00 2.022 <-- Critical Surface 2 235.00 4751.93 440.29 4697.44 463.00 5196.92 500.00 2.023 3 235.00 4751.93 440.81 4697.35 461.53 5190.79 493.88 2.023 4 235.00 4751.93 440.29 4697.44 461.39 5190.86 493.88 2.023 5 235.00 4751.93 440.81 4697.35 459.93 5184.73 487.76 2.023 6 235.00 4751.93 440.29 4697.44 459.79 5184.80 487.76 2.024 7 235.00 4751.93 439.76 4697.61 462.68 5197.09 500.00 2.024 8 235.00 4751.93 440.81 4697.35 458.32 5178.66 481.63 2.024 9 235.00 4751.93 439.76 4697.61 461.07 5191.03 493.88 2.024 10 235.00 4751.93 440.29 4697.44 458.18 5178.74 481.63 2.024 11 235.00 4751.93 440.81 4697.35 456.71 5172.59 475.51 2.025 12 235.00 4751.93 439.76 4697.61 459.46 5184.97 487.76 2.025 13 235.00 4751.93 440.29 4697.44 456.56 5172.67 475.51 2.025 14 235.00 4751.93 439.23 4697.79 462.35 5197.25 500.00 2.025 15 235.00 4751.93 440.81 4697.35 455.10 5166.52 469.39 2.025 16 235.00 4751.93 439.76 4697.61 457.85 5178.91 481.63 2.025 17 235.00 4751.93 439.23 4697.79 460.75 5191.20 493.88 2.025 18 235.00 4751.93 440.29 4697.44 454.95 5166.60 469.39 2.026 19 235.00 4751.93 440.81 4697.35 453.48 5160.44 463.27 2.026 20 235.00 4751.93 439.23 4697.79 459.14 5185.14 487.76 2.026 21 235.00 4751.93 439.76 4697.61 456.24 5172.84 475.51 2.026 22 235.00 4751.93 438.71 4697.96 462.03 5197.42 500.00 2.026 23 235.00 4751.93 440.29 4697.44 453.34 5160.52 24 235.00 4751.93 439.23 4697.79 457.53 5179.07 25 235.00 4751.93 438.71 4697.96 460.42 5191.36 26 235.00 4751.93 440.81 4697.35 451.87 5154.36 27 234.47 4751.93 440.81 4697.35 462.57 5196.88 28 235.00 4751.93 439.76 4697.61 454.63 5166.77 29 235.00 4751.93 440.29 4697.44 451.72 5154.44 30 235.00 4751.93 438.71 4697.96 458.82 5185.30 31 235.00 4751.93 439.23 4697.79 455.92 5173.01 32 234.47 4751.93 440.29 4697.44 462.43 5196.95 33 234.47 4751.93 440.81 4697.35 460.96 5190.82 34 235.00 4751.93 438.18 4698.14 461.70 5197.59 35 235.00 4751.93 439.76 4697.61 453.02 5160.69 36 235.00 4751.93 440.81 4697.35 450.26 5148.27 37 234.47 4751.93 440.29 4697.44 460.82 5190.89 38 235.00 4751.93 438.71 4697.96 457.21 5179.24 39 234.47 4751.93 440.81 4697.35 459.36 5184.75 40 235.00 4751.93 438.18 4698.14 460.10 5191.53 41 235.00 4751.93 439.23 4697.79 454.32 5166.93 42 235.00 4751.93 440.29 4697.44 450.11 5148.35 43 234.47 4751.93 440.29 4697.44 459.22 5184.83 44 235.00 4751.93 439.76 4697.61 451.41 5154.61 45 234.47 4751.93 439.76 4697.61 462.10 5197.11 46 235.00 4751.93 438.18 4698.14 458.49 5185.47 47 235.00 4751.93 438.71 4697.96 455.60 5173.17 48 234.47 4751.93 440.81 4697.35 457.76 5178.68 49 235.00 4751.93 440.81 4697.35 448.64 5142.18 50 235.00 4751.93 437.66 4698.31 461.37 5197.75 51 235.00 4751.93 439.23 4697.79 452.70 5160.86 52 234.47 4751.93 440.29 4697.44 457.61 5178.76 53 234.47 4751.93 439.76 4697.61 460.50 5191.06 54 235.00 4751.93 440.29 4697.44 448.49 5142.26 55 235.00 4751.93 438.18 4698.14 456.89 5179.41 56 234.47 4751.93 440.81 4697.35 456.15 5172.61 57 235.00 4751.93 437.66 4698.31 459.77 5191.70 58 235.00 4751.93 438.71 4697.96 453.99 5167.10 59 235.00 4751.93 439.76 4697.61 449.79 5148.52 60 235.00 4751.93 439.23 4697.79 451.09 5154.78 61 235.00 4751.93 440.81 4697.35 447.02 5136.08 62 234.47 4751.93 439.76 4697.61 458.90 5184.99 63 234.47 4751.93 440.29 4697.44 456.01 5172.69 64 235.00 4751.93 438.18 4698.14 455.28 5173.34 65 234.47 4751.93 439.23 4697.79 461.78 5197.28 66 235.00 4751.93 437.66 4698.31 458.17 5185.64 67 234.47 4751.93 440.81 4697.35 454.54 5166.54 463.27 481.63 493.88 457.14 500.00 469.39 457.14 487.76 475.51 500.00 493.88 500.00 463.27 451.02 493.88 481.63 487.76 493.88 469.39 451.02 487.76 457.14 500.00 487.76 475.51 481.63 444.90 500.00 463.27 481.63 493.88 444.90 481.63 475.51 493.88 469.39 451.02 457.14 438.78 487.76 475.51 475.51 500.00 487.76 469.39 2.026 2.027 2.027 2.027 2.027 2.027 2.027 2.027 2.027 2.027 2.027 2.027 2.027 2.027 2.028 2.028 2.028 2.028 2.028 2.028 2.028 2.028 2.028 2.028 2.028 2.028 2.028 2.028 2.028 2.029 2.029 2.029 2.029 2.029 2.029 2.029 2.029 2.029 2.029 2.029 2.029 2.029 2.029 2.029 2.029 68 235.00 4751.93 438.71 4697.96 452.39 5161.03 463.27 2.030 69 235.00 4751.93 437.13 4698.49 461.05 5197.92 500.00 2.030 70 235.00 4751.93 440.29 4697.44 446.87 5136.16 438.78 2.030 71 234.47 4751.93 439.76 4697.61 457.29 5178.93 481.63 2.030 72 235.00 4751.93 439.76 4697.61 448.18 5142.43 444.90 2.030 73 234.47 4751.93 439.23 4697.79 460.18 5191.22 493.88 2.030 74 235.00 4751.93 437.66 4698.31 456.57 5179.58 481.63 2.030 75 235.00 4751.93 438.18 4698.14 453.68 5167.27 469.39 2.030 76 234.47 4751.93 440.29 4697.44 454.40 5166.61 469.39 2.030 77 235.00 4751.93 439.23 4697.79 449.48 5148.69 451.02 2.030 78 235.00 4751.93 437.13 4698.49 459.45 5191.86 493.88 2.030 79 234.47 4751.93 440.81 4697.35 452.93 5160.46 463.27 2.030 80 235.00 4751.93 440.81 4697.35 445.41 5129.98 432.65 2.030 81 235.00 4751.93 438.71 4697.96 450.77 5154.95 457.14 2.030 82 234.47 4751.93 439.23 4697.79 458.57 5185.16 487.76 2.030 83 234.47 4751.93 439.76 4697.61 455.69 5172.86 475.51 2.030 84 235.00 4751.93 437.66 4698.31 454.96 5173.51 475.51 2.030 85 234.47 4751.93 438.71 4697.96 461.45 5197.45 500.00 2.030 86 235.00 4751.93 437.13 4698.49 457.85 5185.81 487.76 2.030 87 235.00 4751.93 438.18 4698.14 452.07 5161.20 463.27 2.031 88 235.00 4751.93 436.60 4698.67 460.72 5198.08 500.00 2.031 89 235.00 4751.93 440.29 4697.44 445.25 5130.06 432.65 2.031 90 234.47 4751.93 440.29 4697.44 452.79 5160.53 463.27 2.031 91 235.00 4751.93 439.76 4697.61 446.56 5136.34 438.78 2.031 92 235.00 4751.93 439.23 4697.79 447.86 5142.60 444.90 2.031 93 234.47 4751.93 439.23 4697.79 456.97 5179.09 481.63 2.031 94 235.00 4751.93 437.13 4698.49 456.24 5179.74 481.63 2.031 95 234.47 4751.93 438.71 4697.96 459.85 5191.39 493.88 2.031 96 234.47 4751.93 440.81 4697.35 451.32 5154.37 457.14 2.031 97 233.95 4751.94 440.81 4697.35 462.00 5196.90 500.00 2.031 98 235.00 4751.93 437.66 4698.31 453.35 5167.44 469.39 2.031 99 235.00 4751.93 438.71 4697.96 449.16 5148.86 451.02 2.031 Critical Failure Surface (circle 1) Intersects: XL: 235.00 YL: 4751.93 XR: 440.81 YR: 4697.35 Centre: XC: 463.14 YC: 5196.85 Radius: R: 500.00 Generated failure surface: (20 points) 235.00 4751.93 245.11 4746.89 255.32 4742.08 265.65 4737.51 4733.16 286.59 4729.06 297.20 4725.19 307.90 4721.56 318.67 4718.18 4715.04 340.43 4712.14 351.41 4709.49 362.45 4707.09 373.53 4704.95 4703.05 276.07 329.52 384.67 395.84 4697.35 4701.40 407.04 4700.01 418.28 4698.87 429.54 4697.98 440.81 Slice Geometry and Properties - Critical Failure Surface (circle 1, 40 slices) Slice X -S Base PoreWater Normal Test X -Left Area Angle Width Length Matl Cohesion Phi Weight Force Stress Factor 1 235.00 5.90 26.5 4.88 5.45 1 50.00 25.0 590.45 0.00 97.46 1.00 2 239.88 19.42 26.5 5.23 5.84 2 10.00 35.0 2043.72 0.00 331.36 0.95 3 245.11 31.71 25.2 5.11 5.65 2 10.00 35.0 3462.38 0.00 580.75 0.95 4 250.22 43.92 25.2 5.11 5.65 2 10.00 35.0 4868.27 0.00 817.37 0.95 5 255.32 66.01 23.9 5.95 6.50 2 10.00 35.0 7380.10 0.00 1074.10 0.95 6 261.27 39.23 23.9 3.00 3.28 6 0.00 45.0 3923.14 0.00 1072.57 0.90 7 264.27 19.35 23.9 1.38 1.51 2 10.00 35.0 2176.75 0.00 1367.75 0.95 8 265.65 80.42 22.6 5.21 5.65 2 10.00 35.0 9064.67 0.00 1518.07 0.95 9 270.86 91.68 22.6 5.21 5.65 2 10.00 35.0 10360.18 0.00 1735.28 0.95 10 276.07 24.55 21.3 1.30 1.39 2 10.00 35.0 2778.15 0.00 1884.19 0.95 11 277.37 130.03 21.3 6.73 7.22 2 10.00 35.0 14836.12 0.00 1940.31 0.95 12 284.10 48.70 21.3 2.49 2.68 2 10.00 35.0 5600.42 0.00 1977.88 0.95 13 286.59 104.48 20.0 5.30 5.65 2 10.00 35.0 12015.17 0.00 2009.44 0.95 14 291.90 105.36 20.0 5.30 5.65 2 10.00 35.0 12116.15 0.00 2026.40 0.95 15 297.20 106.72 18.7 5.35 5.65 2 10.00 35.0 12273.25 0.00 2052.48 0.94 16 302.55 106.89 18.7 5.35 5.65 2 10.00 35.0 12292.69 0.00 2055.80 0.94 17 307.90 107.49 17.4 5.39 5.65 2 10.00 35.0 12361.37 0.00 2068.20 0.95 18 313.28 106.93 17.4 5.39 5.65 2 10.00 35.0 12297.48 0.00 2057.51 0.95 19 0.95 20 0.95 21 0.95 22 0.95 23 0.95 24 0.95 25 0.95 26 0.95 27 0.95 28 0.95 29 0.96 30 0.96 31 0.96 32 0.96 33 0.97 34 0.97 35 0.97 36 0.97 37 0.98 38 0.98 39 0.98 40 0.98 318.67 106.74 16.1 5.42 5.65 2 10.00 35.0 12275.35 324.09 105.45 16.1 5.42 5.65 2 10.00 35.0 12127.03 329.52 104.45 14.9 5.46 5.65 2 10.00 35.0 12012.28 334.98 102.43 14.9 5.46 5.65 2 10.00 35.0 11779.05 340.43 100.60 13.6 5.49 5.65 2 10.00 35.0 11569.20 345.92 97.83 13.6 5.49 5.65 2 10.00 35.0 11249.88 351.41 95.17 12.3 5.52 5.65 2 10.00 35.0 10944.88 356.93 91.65 12.3 5.52 5.65 2 10.00 35.0 10539.37 362.45 88.15 11.0 5.54 5.65 2 10.00 35.0 10137.63 367.99 83.87 11.0 5.54 5.65 2 10.00 35.0 9644.94 373.53 79.54 9.7 5.57 5.65 2 10.00 35.0 9147.13 379.10 74.50 9.7 5.57 5.65 2 10.00 35.0 8567.03 384.67 69.33 8.4 5.59 5.65 2 10.00 35.0 7973.27 390.25 63.53 8.4 5.59 5.65 2 10.00 35.0 7305.82 395.84 57.54 7.1 5.60 5.65 2 10.00 35.0 6616.68 401.44 50.97 7.1 5.60 5.65 2 10.00 35.0 5861.53 407.04 44.15 5.8 5.62 5.65 2 10.00 35.0 5077.67 412.66 36.84 5.8 5.62 5.65 2 10.00 35.0 4236.07 418.28 29.21 4.5 5.63 5.65 2 10.00 35.0 3359.67 423.91 21.14 4.5 5.63 5.65 2 10.00 35.0 2431.64 429.54 12.49 3.2 5.48 5.49 2 10.00 35.0 1436.79 435.02 4.15 3.2 5.79 5.80 2 10.00 35.0 477.35 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2055.76 2030.91 2014.56 1975.48 1944.10 1890.46 1843.81 1775.40 1712.93 1629.59 1550.93 1452.53 1357.35 1243.66 1131.50 1002.29 872.73 727.98 580.62 420.15 256.92 80.54 X -S Area: 2758.55 Path Length: 214.57 X -S Weight: 315210.72 GALENA 7.2 Analysis Results Version: 7.2.3.05 Licensee: J & T Consulting Project: Sweet Valley Pit File: P:\23038 CCWCD J2 Meining Farm\DRMS Permit\112 Permit\Slope Stability\Galena\S.V. Pit-SS3-Mining.gmf Processed: 29 Feb 2024 14:00:16 DATA: Analysis 1 - SS -3 - Mining Slope - Static Material Properties (6 materials) Material: 1 (Mohr -Coulomb Isotropic) - Cohesion Phi Unsaturated: 50.00 25.0 Saturated: 50.00 25.0 Material: 2 (Mohr -Coulomb Isotropic) - Unsaturated: Saturated: Cohesion Phi UnitWeight 10.00 35.0 115.00 10.00 Material: 3 (Mohr -Coulomb Cohesion Unsaturated: 3000.00 Saturated: 3000.00 Material: 4 (Mohr -Coulomb Isotropic) - Stable Cohesion Phi UnitWeight Unsaturated: 3000.00 0.0 117.00 Saturated: 3000.00 0.0 133.00 Material: 5 (Mohr -Coulomb Isotropic) - Stable Cohesion Phi UnitWeight Unsaturated: 3000.00 0.0 115.00 Saturated: 3000.00 0.0 128.00 Material: 6 (Mohr -Coulomb Isotropic) - Slurry Cohesion Phi UnitWeight Unsaturated: 0.00 45.0 100.00 Saturated: 0.00 45.0 110.00 35.0 130.00 Isotropic) - Stable Phi UnitWeight 0.0 120.00 0.0 135.00 Water Properties Unit weight of water: 62.400 Material Profiles (5 profiles) Profile: 1 (11 points) Material beneath: 1 - Overburden/Clay Overburden/Clay UnitWeight Ru 100.00 Auto 115.00 Auto Sand and Gravel Ru Auto Auto Claystone Ru Auto Auto Siltstone Ru Auto Auto Sandstone Ru Auto Auto Wall Ru Auto Auto Bedrock Bedrock Bedrock Unit weight of water/medium above ground: 62.400 0.00 4760.00 145.50 4760.00 170.00 4760.00 199.95 4759.00 230.00 4759.01 235.90 4758.96 274.96 4758.36 277.96 4758.24 297.80 4756.00 Profile: 2 (2 points) Material beneath: 6 - Slurry Wall 274.96 4758.36 277.96 4758.36 Profile: 3 (2 points) Material beneath: 2 - Sand and Gravel 0.00 4756.00 274.96 4756.00 Profile: 4 (3 points) Material beneath: 2 - Sand and Gravel 277.96 4756.00 297.80 4756.00 467.81 4699.33 Profile: 5 (5 points) Material beneath: 5 - Stable Sandstone Bedrock 0.00 4699.13 78.84 4699.13 276.47 4699.15 467.81 4700.00 Slope Surface (13 points) 0.00 4760.00 4759.00 230.00 4759.01 4758.24 297.80 4756.00 Phreatic Surface (5 points) 0.00 4700.00 Failure Surface 4739.50 145.50 235.90 467.81 4760.00 4758.96 4699.33 274.96 4739.50 170.00 274.96 600.00 4760.00 4758.36 4700.00 277.96 4699.33 199.95 277.96 467.81 Initial circular surface for critical search defined by: XL,XR,R Intersects: XL: 235.90 YL: 4758.96 XR: 467.81 YR: 4699.33 Centre: XC: 433.76 YC: 5047.67 Radius: R: 350.00 Variable Restraints Parameter descriptor: XL XR R Range of variation: 10.00 10.00 300.00 Trial positions within range: 20 20 50 RESULTS: Analysis 1 - SS -3 - Mining Slope - Static 4759.69 219.13 4758.36 291.07 4699.33 600.00 4759.69 219.13 4758.36 291.07 4699.33 600.00 Bishop Simplified Method of Analysis - Circular Failure Surface Critical Failure Surface Search using Multiple Circle Generation Techniques Initial failure surface approximation - Factor of Safety: 3.702 Analysis Summary There were: 18792 successful analyses from a total of 20001 trial failure surfaces 1209 analyses terminated due to unacceptable geometry Critical (minimum) Factor of Safety: 2.61 Results Summary - Lowest 99 Factor of Safety circles Circle X -Left Y -Left X -Right Y -Right X -Centre Y -Centre Radius FoS 1 240.90 4758.88 468.60 4699.33 477.70 5199.25 500.00 2.609 <-- Critical Surface 2 240.90 4758.88 468.07 4699.33 477.73 5199.24 500.00 2.609 3 240.90 4758.88 468.60 4699.33 476.11 5193.15 493.88 2.610 4 240.90 4758.88 468.07 4699.33 476.13 5193.14 493.88 2.610 5 240.90 4758.88 467.55 4699.42 477.58 5199.32 500.00 2.610 6 240.90 4758.88 468.60 4699.33 474.51 5187.05 487.76 2.611 7 240.90 4758.88 468.07 4699.33 474.53 5187.04 487.76 2.611 8 240.90 4758.88 467.55 4699.42 475.98 5193.22 493.88 2.611 9 240.90 4758.88 468.60 4699.33 472.92 5180.95 481.63 2.612 10 240.90 4758.88 467.02 4699.59 477.26 5199.49 500.00 2.612 11 240.90 4758.88 467.55 4699.42 474.38 5187.12 487.76 2.612 12 240.90 4758.88 468.07 4699.33 472.93 5180.94 481.63 2.612 13 240.37 4758.89 468.07 4699.33 477.20 5199.25 500.00 2.613 14 240.90 4758.88 468.60 4699.33 471.32 5174.84 475.51 2.613 15 240.90 4758.88 467.02 4699.59 475.66 5193.40 493.88 2.613 16 240.90 4758.88 467.55 4699.42 472.78 5181.02 481.63 2.614 17 240.90 4758.88 468.07 4699.33 471.33 5174.83 475.51 2.614 18 240.37 4758.89 467.55 4699.42 477.05 5199.33 500.00 2.614 19 240.37 4758.89 468.07 4699.33 475.60 5193.15 493.88 2.614 20 240.90 4758.88 467.02 4699.59 474.07 5187.30 487.76 2.614 21 240.90 4758.88 466.49 4699.77 476.94 5199.66 500.00 2.614 22 240.90 4758.88 468.60 4699.33 469.72 5168.72 469.39 2.615 23 240.90 4758.88 467.55 4699.42 471.18 5174.91 475.51 2.615 24 240.37 4758.89 467.55 4699.42 475.45 5193.23 493.88 2.615 25 240.90 4758.88 468.07 4699.33 469.73 5168.72 469.39 2.615 26 240.37 4758.89 468.07 4699.33 474.01 5187.05 487.76 2.615 27 240.90 4758.88 466.49 4699.77 475.35 5193.57 493.88 2.615 28 240.90 4758.88 467.02 4699.59 472.47 5181.20 481.63 2.615 29 240.37 4758.89 467.02 4699.59 476.73 5199.50 500.00 2.616 30 240.37 4758.89 467.55 4699.42 473.86 5187.13 487.76 2.616 31 240.90 4758.88 468.60 4699.33 468.12 5162.60 463.27 2.616 32 240.37 4758.89 468.07 4699.33 472.41 5180.94 481.63 2.616 33 240.37 4758.89 468.60 4699.33 472.40 5180.95 481.63 2.616 34 240.90 4758.88 467.55 4699.42 469.57 5168.80 469.39 2.616 35 240.90 4758.88 468.07 4699.33 468.12 5162.60 463.27 2.616 36 240.90 4758.88 466.49 4699.77 473.75 5187.47 487.76 2.616 37 240.90 4758.88 465.97 4699.94 476.62 5199.83 500.00 2.616 38 240.37 4758.89 467.02 4699.59 475.14 5193.40 493.88 2.616 39 240.90 4758.88 467.02 4699.59 470.86 5175.09 475.51 2.617 40 240.37 4758.89 467.55 4699.42 472.26 5181.03 481.63 2.617 41 240.37 4758.89 468.07 4699.33 470.81 5174.83 475.51 2.617 42 240.37 4758.89 468.60 4699.33 470.80 5174.84 475.51 2.617 43 240.90 4758.88 464.92 4700.29 474.39 5194.08 493.88 2.617 44 240.90 4758.88 465.44 4700.12 471.52 5181.71 481.63 2.617 45 240.37 4758.89 468.60 4699.33 477.17 5199.26 500.00 2.617 46 240.90 4758.88 468.60 4699.33 466.52 5156.47 457.14 2.617 47 240.90 4758.88 467.55 4699.42 467.97 5162.68 463.27 2.617 48 240.37 4758.89 467.02 4699.59 473.54 5187.30 487.76 2.617 49 240.37 4758.89 466.49 4699.77 476.41 5199.67 500.00 2.617 50 240.90 4758.88 465.97 4699.94 475.03 5193.74 493.88 2.617 51 240.90 4758.88 466.49 4699.77 472.15 5181.37 481.63 2.617 52 240.90 4758.88 465.97 4699.94 468.63 5169.32 469.39 2.618 53 240.90 4758.88 468.07 4699.33 466.52 5156.47 457.14 2.618 54 240.37 4758.89 467.55 4699.42 470.66 5174.92 475.51 2.618 55 240.90 4758.88 467.02 4699.59 469.26 5168.98 469.39 2.618 56 240.37 4758.89 468.07 4699.33 469.21 5168.72 469.39 2.618 57 240.90 4758.88 464.92 4700.29 472.80 5187.99 487.76 2.618 58 240.37 4758.89 468.60 4699.33 469.21 5168.72 469.39 2.618 59 240.90 4758.88 464.39 4700.47 475.66 5200.34 500.00 2.618 60 240.90 4758.88 465.44 4700.12 469.92 5175.61 475.51 2.618 61 240.37 4758.89 468.60 4699.33 475.58 5193.16 493.88 2.618 62 240.37 4758.89 466.49 4699.77 474.82 5193.58 493.88 2.618 63 240.90 4758.88 466.49 4699.77 465.74 5156.91 457.14 2.618 64 240.37 4758.89 467.02 4699.59 471.94 5181.20 481.63 2.618 65 240.90 4758.88 465.97 4699.94 473.43 5187.64 487.76 2.618 66 240.90 4758.88 465.44 4700.12 476.30 5200.00 500.00 2.618 67 240.90 4758.88 466.49 4699.77 470.55 5175.26 475.51 2.619 68 240.90 4758.88 465.97 4699.94 467.03 5163.21 463.27 2.619 69 240.90 4758.88 467.55 4699.42 466.36 5156.56 457.14 2.619 70 240.90 4758.88 468.60 4699.33 464.91 5150.34 451.02 2.619 71 240.37 4758.89 467.55 4699.42 469.06 5168.80 469.39 2.619 72 240.90 4758.88 464.92 4700.29 471.20 5181.89 481.63 2.619 73 240.90 4758.88 464.39 4700.47 474.07 5194.25 493.88 2.619 74 240.37 4758.89 466.49 4699.77 473.22 5187.48 487.76 2.619 75 240.37 4758.89 465.97 4699.94 476.09 5199.84 500.00 2.619 76 240.90 4758.88 468.07 4699.33 464.91 5150.34 451.02 2.619 77 240.37 4758.89 468.60 4699.33 467.61 5162.60 463.27 2.619 78 240.37 4758.89 468.07 4699.33 467.61 5162.60 463.27 2.619 79 240.90 4758.88 465.44 4700.12 468.32 5169.50 469.39 2.619 80 240.37 4758.89 468.60 4699.33 473.99 5187.06 487.76 2.619 81 240.90 4758.88 467.02 4699.59 467.66 5162.86 463.27 2.619 82 240.90 4758.88 467.55 4699.42 461.53 5138.15 438.78 2.619 83 239.85 4758.90 468.07 4699.33 476.67 5199.26 500.00 2.619 84 240.90 4758.88 467.02 4699.59 462.84 5144.47 444.90 2.619 85 240.37 4758.89 467.02 4699.59 470.35 5175.09 475.51 2.619 86 239.85 4758.90 468.60 4699.33 476.65 5199.27 500.00 2.619 87 240.90 4758.88 465.44 4700.12 474.71 5193.91 493.88 2.619 88 240.90 4758.88 465.97 4699.94 471.83 5181.54 481.63 2.619 89 240.90 4758.88 466.49 4699.77 464.14 5150.78 451.02 2.619 90 240.90 4758.88 464.39 4700.47 472.48 5188.16 487.76 2.620 91 240.90 4758.88 464.92 4700.29 469.60 5175.78 475.51 2.620 92 240.90 4758.88 465.97 4699.94 465.43 5157.09 457.14 2.620 93 240.90 4758.88 466.49 4699.77 468.95 5169.15 469.39 2.620 94 240.90 4758.88 463.86 4700.65 475.34 5200.51 500.00 2.620 95 240.37 4758.89 465.97 4699.94 474.50 5193.75 493.88 2.620 96 240.37 4758.89 467.55 4699.42 467.46 5162.68 463.27 2.620 97 240.37 4758.89 466.49 4699.77 471.63 5181.37 481.63 2.620 98 239.85 4758.90 467.55 4699.42 476.52 5199.34 500.00 2.620 99 239.85 4758.90 468.07 4699.33 475.08 5193.16 493.88 2.620 Critical Failure Surface (circle 1) Intersects: XL: 240.90 YL: 4758.88 XR: 468.60 YR: 4699.33 Centre: XC: 477.70 YC: 5199.25 Radius: R: 500.00 Generated failure surface: (20 points) 240.90 4758 88 251.99 4753.10 263.21 4747.59 274.58 4742.37 4737.44 297.67 4732.79 309.39 4728.43 321.22 4724.37 333.14 4720.60 4717.14 357.25 4713.98 369.43 4711.12 381.67 4708.56 393.97 4706.31 4704.37 418.72 4702.74 431.15 4701.42 443.62 4700.41 456.10 4699.72 4699.33 Slice Geometry and Properties - Critical Failure Surface (circle 1, 39 slices) 286.06 345.16 406.32 468.60 Slice Test X -Left Factor 1 240.90 1.03 2 246.43 0.99 3 251.99 0.98 4 257.60 0.98 5 263.21 0.98 6 268.89 0.98 7 274.58 0.93 8 277.96 0.98 9 282.01 0.98 10 286.06 0.97 11 291.07 0.97 12 297.67 0.97 13 303.53 0.97 14 309.39 0.97 15 315.31 0.97 16 321.22 0.97 17 327.18 0.97 18 333.14 0.97 19 339.15 0.97 20 345.16 0.97 X -S Base PoreWater Normal Area Angle Width Length Matl Cohesion Phi Weight Force Stress 7.73 27.6 5.53 6.23 1 50.00 25.0 773.36 0.00 118.86 23.38 27.6 5.56 6.27 2 10.00 35.0 2459.23 0.00 386.23 39.00 26.1 5.61 6.25 2 10.00 35.0 4260.12 0.00 668.98 53.96 26.1 5.61 6.25 2 10.00 35.0 5988.18 0.00 941.01 69.35 24.7 5.68 6.25 2 10.00 35.0 7762.55 0.00 1214.86 83.69 24.7 5.68 6.25 2 10.00 35.0 9418.52 0.00 1474.33 56.58 23.3 3.38 3.68 6 0.00 45.0 5658.10 0.00 1435.16 74.12 23.3 4.05 4.41 2 10.00 35.0 8382.03 0.00 1853.34 81.03 23.3 4.05 4.41 2 10.00 35.0 9178.32 0.00 2029.55 109.29 21.8 5.01 5.39 2 10.00 35.0 12398.94 0.00 2234.90 152.05 21.8 6.60 7.11 2 10.00 35.0 17373.08 0.00 2374.92 136.95 20.4 5.86 6.25 2 10.00 35.0 15748.75 0.00 2442.25 138.26 20.4 5.86 6.25 2 10.00 35.0 15900.13 0.00 2465.73 140.34 19.0 5.91 6.25 2 10.00 35.0 16139.49 0.00 2497.91 140.70 19.0 5.91 6.25 2 10.00 35.0 16180.08 0.00 2504.18 141.73 17.5 5.96 6.25 2 10.00 35.0 16298.54 0.00 2519.07 141.10 17.5 5.96 6.25 2 10.00 35.0 16226.90 0.00 2507.99 141.04 16.1 6.01 6.25 2 10.00 35.0 16220.04 0.00 2505.10 139.43 16.1 6.01 6.25 2 10.00 35.0 16033.92 0.00 2476.28 138.26 14.7 6.05 6.25 2 10.00 35.0 15899.65 0.00 2455.26 21 0.97 22 0.97 23 0.97 24 0.97 25 0.97 26 0.97 27 0.97 28 0.97 29 0.97 30 0.97 31 0.97 32 0.98 33 0.98 34 0.98 35 0.98 36 0.99 37 0.99 38 0.99 39 0.99 351.21 135.63 14.7 6.05 6.25 2 10.00 35.0 357.25 133.33 13.2 6.09 6.25 2 10.00 35.0 363.34 129.69 13.2 6.09 6.25 2 10.00 35.0 369.43 126.24 11.8 6.12 6.25 2 10.00 35.0 375.55 121.58 11.8 6.12 6.25 2 10.00 35.0 381.67 116.98 10.4 6.15 6.25 2 10.00 35.0 387.82 111.28 10.4 6.15 6.25 2 10.00 35.0 393.97 105.54 8.9 6.18 6.25 2 10.00 35.0 400.14 98.81 8.9 6.18 6.25 2 10.00 35.0 406.32 91.91 7.5 6.20 6.25 2 10.00 35.0 412.52 84.16 7.5 6.20 6.25 2 10.00 35.0 418.72 76.13 6.1 6.22 6.25 2 10.00 35.0 424.94 67.35 6.1 6.22 6.25 2 10.00 35.0 431.15 58.20 4.6 6.23 6.25 2 10.00 35.0 437.38 48.40 4.6 6.23 6.25 2 10.00 35.0 443.62 38.17 3.2 6.24 6.25 2 10.00 35.0 449.86 27.35 3.2 6.24 6.25 2 10.00 35.0 456.10 15.31 1.8 5.81 5.81 2 10.00 35.0 461.91 4.99 1.8 6.69 6.69 2 10.00 35.0 X -S Area: 3599.06 15597.36 15333.23 14913.88 14517.74 13981.28 13452.84 12797.64 12136.64 11363.29 10569.78 9678.38 8755.02 7745.01 6693.09 5566.29 4389.30 3145.62 1761.07 573.66 Path Length: 237.58 X -S Weight: 411271.09 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2408.61 2368.98 2304.17 2245.48 2162.52 2084.42 1982.88 1884.97 1764.78 1646.58 1507.67 1368.78 1210.85 1050.89 873.92 692.56 496.27 300.63 84.93 GALENA 7.2 Analysis Results Version: 7.2.3.05 Licensee: J & T Consulting Project: Sweet Valley Pit File: P:\23038 CCWCD J2 Meining Farm\DRMS Permit\112 Permit\Slope Stability\Galena\S.V. Pit-SS3-Mining-Pseudo Static.gmf Processed: 29 Feb 2024 14:03:04 DATA: Analysis 1 - SS -3 - Mining Slope - Pseudo Static Material Properties (6 materials) Material: 1 (Mohr -Coulomb Isotropic) - Overburden/Clay Cohesion Phi UnitWeight Ru Unsaturated: 50.00 25.0 100.00 Auto Saturated: 50.00 25.0 115.00 Auto Material: 2 (Mohr -Coulomb Isotropic) - Sand and Gravel Cohesion Phi UnitWeight Ru Unsaturated: 10.00 35.0 115.00 Auto Saturated: 10.00 35.0 130.00 Auto Material: 3 (Mohr -Coulomb Isotropic) - Stable Claystone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 120.00 Auto Saturated: 3000.00 0.0 135.00 Auto Material: 4 (Mohr -Coulomb Isotropic) - Stable Siltstone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 117.00 Auto Saturated: 3000.00 0.0 133.00 Auto Material: 5 (Mohr -Coulomb Isotropic) - Stable Sandstone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 115.00 Auto Saturated: 3000.00 0.0 128.00 Auto Material: 6 (Mohr -Coulomb Isotropic) - Slurry Wall Cohesion Phi UnitWeight Ru Unsaturated: 0.00 45.0 100.00 Auto Saturated: 0.00 45.0 110.00 Auto Water Properties Unit weight of water: 62.400 Unit weight of water/medium above ground: 62.400 Material Profiles (5 profiles) Profile: 1 (11 points) 0.00 4760.00 4759.00 230.00 4759.01 4758.24 297.80 4756.00 Profile: 2 (2 points) 274.96 4758.36 Profile: 3 (2 points) 0.00 4756.00 Profile: 4 (3 points) 277.96 4756.00 Profile: 5 (5 points) 0.00 4699.13 4700.00 Slope Surface (13 points) 0.00 4760.00 4759.00 230.00 4759.01 4758.24 297.80 4756.00 Material beneath: 1 - Overburden/Clay 145.50 4760.00 170.00 235.90 4758.96 4760.00 199.95 274.96 4758.36 Material beneath: 6 - Slurry Wall 277.96 4758.36 Material beneath: 2 - Sand and Gravel 274.96 4756.00 Material beneath: 2 - Sand and Gravel 297.80 4756.00 467.81 4699.33 Material beneath: 5 - Stable Sandstone Bedrock 78.84 4699.13 276.47 4699.15 Phreatic Surface (5 points) 0.00 4700.00 Failure Surface 4739.50 145.50 235.90 467.81 4760.00 4758.96 4699.33 274.96 4739.50 170.00 274.96 600.00 4760.00 4758.36 4700.00 277.96 4699.33 Initial circular surface for critical search defined by: XL,XR,R Intersects: XL: 235.90 YL: 4758.96 XR: 467.81 YR: Centre: XC: 433.76 YC: 5047.67 Radius: R: Earthquake Force Pseudo -static earthquake (seismic) coefficient: 0.070 Variable Restraints Parameter descriptor: Range of variation: Trial positions within range: XL 10.00 20 XR 10.00 20 R 300.00 50 4759.69 219.13 277.96 4758.36 467.81 4699.33 199.95 4759.69 277.96 4758.36 467.81 4699.33 4699.33 350.00 291.07 600.00 219.13 291.07 600.00 RESULTS: Analysis 1 - SS -3 - Mining Slope - Static Bishop Simplified Method of Analysis - Circular Failure Surface Critical Failure Surface Search using Multiple Circle Generation Techniques Initial failure surface approximation - Factor of Safety: 2.926 Analysis Summary There were: 18792 successful analyses from a total of 20001 trial failure surfaces 1209 analyses terminated due to unacceptable geometry Critical (minimum) Factor of Safety: 2.05 Results Summary - Lowest 99 Factor of Safety circles Circle X -Left Y -Left X -Right Y -Right X -Centre Y -Centre Radius FoS 1 240.90 4758.88 468.60 4699.33 477.70 5199.25 500.00 2.050 <-- Critical Surface 2 240.90 4758.88 468.07 4699.33 477.73 5199.24 500.00 2.050 3 240.90 4758.88 467.55 4699.42 477.58 5199.32 500.00 2.051 4 240.90 4758.88 468.60 4699.33 476.11 5193.15 493.88 2.051 5 240.90 4758.88 468.07 4699.33 476.13 5193.14 493.88 2.051 6 240.90 4758.88 467.55 4699.42 475.98 5193.22 493.88 2.052 7 240.90 4758.88 468.60 4699.33 474.51 5187.05 487.76 2.052 8 240.90 4758.88 468.07 4699.33 474.53 5187.04 487.76 2.052 9 240.90 4758.88 467.02 4699.59 477.26 5199.49 500.00 2.052 10 240.37 4758.89 468.07 4699.33 477.20 5199.25 500.00 2.053 11 240.90 4758.88 467.55 4699.42 474.38 5187.12 487.76 2.053 12 240.90 4758.88 468.60 4699.33 472.92 5180.95 481.63 2.053 13 240.37 4758.89 467.55 4699.42 477.05 5199.33 500.00 2.053 14 240.90 4758.88 467.02 4699.59 475.66 5193.40 493.88 2.053 15 240.90 4758.88 468.07 4699.33 472.93 5180.94 481.63 2.053 16 240.37 4758.89 468.07 4699.33 475.60 5193.15 493.88 2.053 17 240.90 4758.88 466.49 4699.77 476.94 5199.66 500.00 2.054 18 240.90 4758.88 467.55 4699.42 472.78 5181.02 481.63 2.054 19 240.37 4758.89 467.55 4699.42 475.45 5193.23 493.88 2.054 20 240.90 4758.88 468.60 4699.33 471.32 5174.84 475.51 2.054 21 240.90 4758.88 467.02 4699.59 474.07 5187.30 487.76 2.054 22 240.37 4758.89 467.02 4699.59 476.73 5199.50 500.00 2.054 23 240.90 4758.88 468.07 4699.33 471.33 5174.83 475.51 24 240.37 4758.89 468.07 4699.33 474.01 5187.05 487.76 25 240.90 4758.88 466.49 4699.77 475.35 5193.57 493.88 26 240.37 4758.89 467.55 4699.42 473.86 5187.13 487.76 27 240.90 4758.88 465.97 4699.94 476.62 5199.83 500.00 28 240.37 4758.89 467.02 4699.59 475.14 5193.40 493.88 29 240.90 4758.88 467.55 4699.42 471.18 5174.91 475.51 30 240.90 4758.88 467.02 4699.59 472.47 5181.20 481.63 31 240.90 4758.88 464.92 4700.29 474.39 5194.08 493.88 32 240.90 4758.88 468.60 4699.33 469.72 5168.72 469.39 33 240.37 4758.89 466.49 4699.77 476.41 5199.67 500.00 34 240.37 4758.89 468.07 4699.33 472.41 5180.94 481.63 35 240.37 4758.89 468.60 4699.33 472.40 5180.95 481.63 36 240.90 4758.88 466.49 4699.77 473.75 5187.47 487.76 37 240.90 4758.88 468.07 4699.33 469.73 5168.72 469.39 38 240.90 4758.68 464.39 4700.47 475.66 5200.34 500.00 39 240.37 4758.89 468.60 4699.33 477.17 5199.26 500.00 40 240.37 4758.89 467.55 4699.42 472.26 5181.03 481.63 41 240.90 4758.88 465.97 4699.94 475.03 5193.74 493.88 42 240.37 4758.89 467.02 4699.59 473.54 5187.30 487.76 43 240.90 4758.88 465.44 4700.12 471.52 5181.71 481.63 44 240.90 4758.88 464.92 4700.29 472.80 5187.99 487.76 45 240.37 4758.89 466.49 4699.77 474.82 5193.58 493.88 46 240.90 4758.88 467.55 4699.42 469.57 5168.80 469.39 47 240.90 4758.88 465.44 4700.12 476.30 5200.00 500.00 48 240.37 4758.89 468.07 4699.33 470.81 5174.83 475.51 49 240.37 4758.89 468.60 4699.33 470.80 5174.84 475.51 50 240.90 4758.88 464.39 4700.47 474.07 5194.25 493.88 51 240.90 4758.88 467.02 4699.59 470.86 5175.09 475.51 52 240.37 4758.89 465.97 4699.94 476.09 5199.84 500.00 53 240.90 4758.88 468.60 4699.33 468.12 5162.60 463.27 54 240.90 4758.88 466.49 4699.77 472.15 5181.37 481.63 55 240.37 4758.89 468.60 4699.33 475.58 5193.16 493.88 56 240.90 4758.88 463.86 4700.65 475.34 5200.51 500.00 57 239.85 4758.90 468.07 4699.33 476.67 5199.26 500.00 58 240.90 4758.88 468.07 4699.33 468.12 5162.60 463.27 59 239.85 4758.90 468.60 4699.33 476.65 5199.27 500.00 60 240.37 4758.89 467.55 4699.42 470.66 5174.92 475.51 61 240.90 4758.88 465.97 4699.94 473.43 5187.64 487.76 62 240.90 4758.88 465.97 4699.94 468.63 5169.32 469.39 63 240.37 4758.89 467.02 4699.59 471.94 5181.20 481.63 64 240.90 4758.88 465.44 4700.12 469.92 5175.61 475.51 65 240.37 4758.89 466.49 4699.77 473.22 5187.48 487.76 66 240.90 4758.88 464.92 4700.29 471.20 5181.89 481.63 67 240.90 4758.88 464.39 4700.47 472.48 5188.16 487.76 2.054 2.054 2.054 2.055 2.055 2.055 2.055 2.055 2.055 2.055 2.055 2.055 2.055 2.055 2.055 2.055 2.056 2.056 2.056 2.056 2.056 2.056 2.056 2.056 2.056 2.056 2.056 2.056 2.056 2.056 2.056 2.056 2.056 2.057 2.057 2.057 2.057 2.057 2.057 2.057 2.057 2.057 2.057 2.057 2.057 68 240.90 4758.88 465.44 4700.12 474.71 5193.91 493.88 2.057 69 239.85 4758.90 467.55 4699.42 476.52 5199.34 500.00 2.057 70 240.37 4758.89 465.97 4699.94 474.50 5193.75 493.88 2.057 71 240.37 4758.89 468.07 4699.33 469.21 5168.72 469.39 2.057 72 240.37 4758.89 468.60 4699.33 469.21 5168.72 469.39 2.057 73 240.90 4758.88 463.86 4700.65 473.75 5194.42 493.88 2.057 74 240.37 4758.89 465.44 4700.12 475.77 5200.01 500.00 2.057 75 240.90 4758.88 467.55 4699.42 467.97 5162.68 463.27 2.057 76 240.90 4758.88 467.02 4699.59 469.26 5168.98 469.39 2.057 77 239.85 4758.90 468.07 4699.33 475.08 5193.16 493.88 2.057 78 239.85 4758.90 468.60 4699.33 475.06 5193.17 493.88 2.057 79 240.37 4758.89 468.60 4699.33 473.99 5187.06 487.76 2.057 80 240.90 4758.88 464.92 4700.29 475.98 5200.17 500.00 2.057 81 240.90 4758.88 466.49 4699.77 470.55 5175.26 475.51 2.057 82 240.90 4758.88 463.34 4700.82 475.02 5200.68 500.00 2.058 83 240.90 4758.88 468.60 4699.33 466.52 5156.47 457.14 2.058 84 240.37 4758.89 467.02 4699.59 470.35 5175.09 475.51 2.058 85 240.37 4758.89 467.55 4699.42 469.06 5168.80 469.39 2.058 86 240.90 4758.88 465.97 4699.94 471.83 5181.54 481.63 2.058 87 240.90 4758.88 465.44 4700.12 468.32 5169.50 469.39 2.058 88 240.37 4758.89 466.49 4699.77 471.63 5181.37 481.63 2.058 89 240.90 4758.88 465.97 4699.94 467.03 5163.21 463.27 2.058 90 240.90 4758.88 464.92 4700.29 469.60 5175.78 475.51 2.058 91 239.85 4758.90 467.55 4699.42 474.93 5193.24 493.88 2.058 92 240.90 4758.88 466.49 4699.77 465.74 5156.91 457.14 2.058 93 240.37 4758.89 465.97 4699.94 472.90 5187.65 487.76 2.058 94 240.90 4758.88 464.39 4700.47 470.88 5182.06 481.63 2.058 95 240.90 4758.88 468.07 4699.33 466.52 5156.47 457.14 2.058 96 240.90 4758.88 465.44 4700.12 473.11 5187.81 487.76 2.058 97 239.85 4758.90 467.02 4699.59 476.20 5199.51 500.00 2.058 98 240.37 4758.89 465.44 4700.12 474.18 5193.92 493.88 2.058 99 240.90 4758.88 463.86 4700.65 472.16 5188.33 487.76 2.058 Critical Failure Surface (circle 1) Intersects: XL: 240.90 YL: 4758.88 XR: 468.60 YR: 4699.33 Centre: XC: 477.70 YC: 5199.25 Radius: R: 500.00 Generated failure surface: (20 points) 240.90 4758.88 251.99 4753.10 263.21 4747.59 274.58 4742.37 4737.44 297.67 4732.79 309.39 4728.43 321.22 4724.37 333.14 4720.60 4717.14 357.25 4713.98 369.43 4711.12 381.67 4708.56 393.97 4706.31 4704.37 286.06 345.16 406.32 418.72 4699.33 4702.74 431.15 4701.42 443.62 4700.41 456.10 4699.72 468.60 Slice Geometry and Properties - Critical Failure Surface (circle 1, 39 slices) Slice Test Factor 1 1.01 2 0.96 3 0.95 4 0.95 5 0.95 6 0.95 7 0.90 8 0.95 9 0.95 10 0.95 11 0.95 12 0.95 13 0.95 14 0.95 15 0.95 16 0.95 17 0.95 18 0.95 X -S Base PoreWater Normal X -Left Area Angle Width Length Matl Cohesion Phi Weight Force Stress 240.90 7.73 27.6 5.53 6.23 1 50.00 25.0 773.36 0.00 113.72 246.43 23.38 27.6 5.56 6.27 2 10.00 35.0 2459.23 0.00 373.25 251.99 39.00 26.1 5.61 6.25 2 10.00 35.0 4260.12 0.00 647.98 257.60 53.96 26.1 5.61 6.25 2 10.00 35.0 5988.18 0.00 911.65 263.21 69.35 24.7 5.68 6.25 2 10.00 35.0 7762.55 0.00 1179.13 268.89 83.69 24.7 5.68 6.25 2 10.00 35.0 9418.52 0.00 1431.05 274.58 56.58 23.3 3.38 3.68 6 0.00 45.0 5658.10 0.00 1381.88 277.96 74.12 23.3 4.05 4.41 2 10.00 35.0 8382.03 0.00 1802.13 282.01 81.03 23.3 4.05 4.41 2 10.00 35.0 9178.32 0.00 1973.50 286.06 109.29 21.8 5.01 5.39 2 10.00 35.0 12398.94 0.00 2176.93 291.07 152.05 21.8 6.60 7.11 2 10.00 35.0 17373.08 0.00 2313.34 297.67 136.95 20.4 5.86 6.25 2 10.00 35.0 15748.75 0.00 2382.96 303.53 138.26 20.4 5.86 6.25 2 10.00 35.0 15900.13 0.00 2405.88 309.39 140.34 19.0 5.91 6.25 2 10.00 35.0 16139.49 0.00 2441.40 315.31 140.70 19.0 5.91 6.25 2 10.00 35.0 16180.08 0.00 2447.53 321.22 141.73 17.5 5.96 6.25 2 10.00 35.0 16298.54 0.00 2466.24 327.18 141.10 17.5 5.96 6.25 2 10.00 35.0 16226.90 0.00 2455.39 333.14 141.04 16.1 6.01 6.25 2 10.00 35.0 16220.04 0.00 2456.69 19 0.95 20 0.95 21 0.95 22 0.95 23 0.95 24 0.95 25 0.95 26 0.96 27 0.96 28 0.96 29 0.96 30 0.97 31 0.97 32 0.97 33 0.97 34 0.98 35 0.98 36 0.98 37 0.98 38 0.99 39 0.99 339.15 139.43 16.1 6.01 6.25 2 10.00 35.0 16033.92 345.16 138.26 14.7 6.05 6.25 2 10.00 35.0 15899.65 351.21 135.63 14.7 6.05 6.25 2 10.00 35.0 15597.36 357.25 133.33 13.2 6.09 6.25 2 10.00 35.0 15333.23 363.34 129.69 13.2 6.09 6.25 2 10.00 35.0 14913.88 369.43 126.24 11.8 6.12 6.25 2 10.00 35.0 14517.74 375.55 121.58 11.8 6.12 6.25 2 10.00 35.0 13981.28 381.67 116.98 10.4 6.15 6.25 2 10.00 35.0 13452.84 387.82 111.28 10.4 6.15 6.25 2 10.00 35.0 12797.64 393.97 105.54 8.9 6.18 6.25 2 10.00 35.0 12136.64 400.14 98.81 B.9 6.18 6.25 2 10.00 35.0 11363.29 406.32 91.91 7.5 6.20 6.25 2 10.00 35.0 10569.78 412.52 84.16 7.5 6.20 6.25 2 10.00 35.0 9678.38 418.72 76.13 6.1 6.22 6.25 2 10.00 35.0 8755.02 424.94 67.35 6.1 6.22 6.25 2 10.00 35.0 7745.01 431.15 58.20 4.6 6.23 6.25 2 10.00 35.0 6693.09 437.38 48.40 4.6 6.23 6.25 2 10.00 35.0 5566.29 443.62 38.17 3.2 6.24 6.25 2 10.00 35.0 4389.30 449.86 27.35 3.2 6.24 6.25 2 10.00 35.0 3145.62 456.10 15.31 1.8 5.81 5.81 2 10.00 35.0 1761.07 461.91 4.99 1.8 6.69 6.69 2 10.00 35.0 573.66 X -S Area: 3599.06 Path Length: 237.58 X -S Weight: 411271.09 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2428.42 2411.87 2366.05 2331.04 2267.26 2213.25 2131.48 2058.00 1957.74 1864.26 1745.37 1631.29 1493.66 1358.41 1201.67 1044.75 868.80 689.73 494.22 299.93 84.71 GALENA 7.2 Analysis Results Version: 7.2.3.05 Licensee: J & T Consulting Project: Sweet Valley Pit File: P:\23038 CCWCD J2 Meining Farm\DRMS Permit\112 Permit\Slope Stability\Galena\S.V. Pit-SS4-Mining.gmf Processed: 29 Feb 2024 14:52:09 DATA: Analysis 1 - SS -4 - Mining Slope - Static Material Properties (6 materials) Material: 1 (Mohr -Coulomb Isotropic) - Overburden/Clay Cohesion Phi UnitWeight Ru Unsaturated: 50.00 25.0 100.00 Auto Saturated: 50.00 25.0 115.00 Auto Material: 2 (Mohr -Coulomb Isotropic) - Sand and Gravel Cohesion Phi UnitWeight Ru Unsaturated: 10.00 35.0 115.00 Auto Saturated: 10.00 35.0 130.00 Auto Material: 3 (Mohr -Coulomb Isotropic) - Stable Claystone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 120.00 Auto Saturated: 3000.00 0.0 135.00 Auto Material: 4 (Mohr -Coulomb Isotropic) - Stable Siltstone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 117.00 Auto Saturated: 3000.00 0.0 133.00 Auto Material: 5 (Mohr -Coulomb Isotropic) - Stable Sandstone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 115.00 Auto Saturated: 3000.00 0.0 128.00 Auto Material: 6 (Mohr -Coulomb Isotropic) - Slurry Wall Cohesion Phi UnitWeight Ru Unsaturated: 0.00 45.0 100.00 Auto Saturated: 0.00 45.0 110.00 Auto Water Properties Unit weight of water: 62.400 Unit weight of water/medium above ground: 62.400 Material Profiles (5 profiles) Profile: 1 (9 points) Material beneath: 1 - Overburden/Clay 0.00 4758.73 0.91 4758.73 43.49 4758.52 97.40 4758.18 172.51 4757.38 198.50 4757.00 201.50 4757.00 216.13 4757.00 226.63 4753.50 Profile: 2 (2 points) Material beneath: 6 - Slurry Wall 198.50 4757.00 201.50 4757.00 Profile: 3 (2 points) Material beneath: 2 - Sand and Gravel 0.00 4753.50 198.50 4753.50 Profile: 4 (3 points) Material beneath: 2 - Sand and Gravel 201.50 4753.50 226.63 4753.50 391.49 4698.54 Profile: 5 (5 points) Material beneath: 3 - Stable Claystone Bedrock 0.00 4699.82 200.00 4699.65 391.49 4698.54 453.65 4697.06 600.00 4697.00 Slope Surface (12 points) 0.00 4758.73 4757.38 198.50 4757.00 4698.54 453.65 4697.06 Phreatic Surface (6 points) 0.00 4697.06 600.00 Failure Surface 4739.50 4697.00 0.91 201.50 600.00 4758.73 4757.00 4697.00 198.50 4739.50 43.49 216.13 201.50 4758.52 97.40 4757.00 226.63 4699.65 391.49 Initial circular surface for critical search defined by: XL,XR,R Intersects: XL: 97.40 YL: 4758.18 X.R: 391.49 YR: 4698.54 Centre: XC: 349.61 YC: 5246.94 Radius: R: 550.00 Variable Restraints Parameter descriptor: XL XR R Range of variation: 10.00 10.00 500.00 Trial positions within range: 20 20 50 RESULTS: Analysis 1 - SS -4 - Mining Slope - Static Bishop Simplified Method of Analysis - Circular Failure Surface 4758.18 172.51 4753.50 391.49 4698.54 453.65 Critical Failure Surface Search using Multiple Circle Generation Techniques Initial failure surface approximation - Factor of Safety: 4.213 Analysis Summary There were: 19979 successful analyses from a total of 20001 trial failure surfaces 22 analyses terminated due to unacceptable geometry Critical (minimum) Factor of Safety: 3.07 Results Summary - Lowest 99 Factor of Safety circles Circle X -Left Y -Left X -Right Y -Right X -Centre Y -Centre Radius FoS 1 92.40 4758.21 396.49 4698.42 294.01 4980.37 300.00 3.070 <-- Critical Surface 2 92.93 4758.21 396.49 4698.42 294.38 4980.51 300.00 3.073 3 92.40 4758.21 395.96 4698.43 293.84 4980.52 300.00 3.073 4 93.45 4758.21 396.49 4698.42 294.75 4980.64 300.00 3.075 5 92.93 4758.21 395.96 4698.43 294.22 4980.65 300.00 3.076 6 92.40 4758.21 395.44 4698.45 293.68 4980.66 300.00 3.076 7 93.98 4758.20 396.49 4698.42 295.13 4980.78 300.00 3.077 8 93.45 4758.21 395.96 4698.43 294.59 4980.79 300.00 3.078 9 92.93 4758.21 395.44 4698.45 294.06 4980.80 300.00 3.079 10 92.40 4758.21 394.91 4698.46 293.53 4980.81 300.00 3.080 11 94.51 4758.20 396.49 4698.42 295.50 4980.91 300.00 3.080 12 93.98 4758.20 395.96 4698.43 294.97 4980.92 300.00 3.081 13 93.45 4758.21 395.44 4698.45 294.43 4980.93 300.00 3.081 14 92.93 4758.21 394.91 4698.46 293.90 4980.94 300.00 3.082 15 95.03 4758.20 396.49 4698.42 295.87 4981.05 300.00 3.083 16 92.40 4758.21 394.38 4698.47 293.37 4980.95 300.00 3.083 17 94.51 4758.20 395.96 4698.43 295.34 4981.06 300.00 3.083 18 93.98 4758.20 395.44 4698.45 294.81 4981.07 300.00 3.084 19 93.45 4758.21 394.91 4698.46 294.27 4981.08 300.00 3.084 20 95.56 4758.19 396.49 4698.42 296.25 4981.18 300.00 3.085 21 92.93 4758.21 394.38 4698.47 293.74 4981.08 300.00 3.085 22 95.03 4758.20 395.96 4698.43 295.72 4981.19 300.00 3.086 23 92.40 4758.21 393.86 4698.48 293.21 4981.10 300.00 3.086 24 94.51 4758.20 395.44 4698.45 295.18 4981.20 300.00 3.086 25 93.98 4758.20 394.91 4698.46 294.65 4981.21 300.00 3.087 26 93.45 4758.21 394.38 4698.47 294.11 4981.22 300.00 3.087 27 95.56 4758.19 395.96 4698.43 296.09 4981.32 300.00 3.088 28 92.93 4758.21 393.86 4698.48 293.58 4981.23 300.00 3.089 29 95.03 4758.20 395.44 4698.45 295.56 4981.33 300.00 3.089 30 92.40 4758.21 393.33 4698.50 293.05 4981.24 300.00 3.089 31 94.51 4758.20 394.91 4698.46 295.02 4981.34 300.00 3.089 32 93.98 4758.20 394.38 4698.47 294.49 4981.35 300.00 3.090 33 93.45 4758.21 393.86 4698.48 293.96 4981.36 300.00 3.091 34 96.08 4758.19 395.96 4698.43 296.47 4981.45 300.00 3.091 35 95.56 4758.19 395.44 4698.45 295.93 4981.46 300.00 3.091 36 92.93 4758.21 393.33 4698.50 293.42 4981.37 300.00 3.092 37 96.08 4758.19 396.49 4698.42 296.62 4981.31 300.00 3.092 38 95.03 4758.20 394.91 4698.46 295.40 4981.47 300.00 3.092 39 94.51 4758.20 394.38 4698.47 294.86 4981.48 300.00 3.092 40 92.40 4758.21 392.81 4698.51 292.89 4981.38 300.00 3.092 41 93.98 4758.20 393.86 4698.48 294.33 4981.49 300.00 3.093 42 96.61 4758.19 396.49 4698.42 297.00 4981.44 300.00 3.093 43 93.45 4758.21 393.33 4698.50 293.80 4981.50 300.00 3.094 44 96.08 4758.19 395.44 4698.45 296.31 4981.60 300.00 3.094 45 95.56 4758.19 394.91 4698.46 295.77 4981.60 300.00 3.094 46 97.14 4758.18 396.49 4698.42 297.38 4981.58 300.00 3.095 47 92.93 4758.21 392.81 4698.51 293.26 4981.51 300.00 3.095 48 95.03 4758.20 394.38 4698.47 295.24 4981.62 300.00 3.095 49 94.51 4758.20 393.86 4698.48 294.71 4981.62 300.00 3.095 50 92.40 4758.21 392.28 4698.52 292.73 4981.52 300.00 3.096 51 93.98 4758.20 393.33 4698.50 294.17 4981.63 300.00 3.096 52 97.66 4758.18 396.49 4698.42 297.75 4981.71 300.00 3.096 53 96.61 4758.19 395.96 4698.43 296.84 4981.58 300.00 3.097 54 96.08 4758.19 394.91 4698.46 296.15 4981.74 300.00 3.097 55 93.45 4758.21 392.81 4698.51 293.64 4981.65 300.00 3.097 56 95.56 4758.19 394.38 4698.47 295.62 4981.75 300.00 3.097 57 95.03 4758.20 393.86 4698.48 295.08 4981.76 300.00 3.098 58 92.93 4758.21 392.28 4698.52 293.11 4981.65 300.00 3.098 59 97.14 4758.18 395.96 4698.43 297.22 4981.72 300.00 3.098 60 94.51 4758.20 393.33 4698.50 294.55 4981.77 300.00 3.099 61 98.19 4758.17 396.49 4698.42 298.12 4981.84 300.00 3.099 62 92.40 4758.21 391.75 4698.53 292.57 4981.66 300.00 3.099 63 93.98 4758.20 392.81 4698.51 294.02 4981.78 300.00 3.099 64 96.61 4758.19 394.91 4698.46 296.53 4981.87 300.00 3.099 65 97.66 4758.18 395.96 4698.43 297.59 4981.85 300.00 3.100 66 96.08 4758.19 394.38 4698.47 295.99 4981.88 300.00 3.100 67 93.45 4758.21 392.28 4698.52 293.48 4981.79 300.00 3.100 68 96.61 4758.19 395.44 4698.45 296.68 4981.73 300.00 3.100 69 95.56 4758.19 393.86 4698.48 295.46 4981.89 300.00 3.100 70 95.03 4758.20 393.33 4698.50 294.93 4981.90 300.00 3.101 71 92.93 4758.21 391.75 4698.53 292.95 4981.80 300.00 3.101 72 98.19 4758.17 395.96 4698.43 297.97 4981.98 300.00 3.102 73 98.72 4758.17 396.49 4698.42 298.50 4981.97 300.00 3.102 74 94.51 4758.20 392.81 4698.51 294.39 4981.91 300.00 3.102 75 97.14 4758.18 395.44 4698.45 297.06 4981.86 300.00 3.102 76 93.98 4758.20 392.28 4698.52 293.86 4981.92 300.00 3.102 77 98.72 4758.17 395.96 4698.43 298.34 4982.11 300.00 3.102 78 96.61 4758.19 394.38 4698.47 296.37 4982.01 300.00 3.102 79 96.08 4758.19 393.86 4698.48 295.84 4982.02 300.00 3.103 80 93.45 4758.21 391.75 4698.53 293.32 4981.93 300.00 3.103 81 97.66 4758.18 395.44 4698.45 297.44 4981.99 300.00 3.103 82 95.56 4758.19 393.33 4698.50 295.30 4982.03 300.00 3.103 83 95.03 4758.20 392.81 4698.51 294.77 4982.04 300.00 3.104 84 94.51 4758.20 392.28 4698.52 294.23 4982.05 300.00 3.105 85 98.19 4758.17 395.44 4698.45 297.81 4982.12 300.00 3.105 86 97.14 4758.18 394.91 4698.46 296.90 4982.00 300.00 3.105 87 96.61 4758.19 393.86 4698.48 296.21 4982.15 300.00 3.105 88 93.98 4758.20 391.75 4698.53 293.70 4982.06 300.00 3.106 89 96.08 4758.19 393.33 4698.50 295.68 4982.16 300.00 3.106 90 92.40 4758.21 391.23 4698.63 292.35 4981.86 300.00 3.106 91 98.72 4758.17 395.44 4698.45 298.19 4982.25 300.00 3.106 92 95.56 4758.19 392.81 4698.51 295.14 4982.17 300.00 3.107 93 97.66 4758.18 394.91 4698.46 297.28 4982.13 300.00 3.107 94 95.03 4758.20 392.28 4698.52 294.61 4982.18 300.00 3.107 95 99.24 4758.16 396.49 4698.42 298.87 4982.10 300.00 3.107 96 98.19 4758.17 394.91 4698.46 297.65 4982.26 300.00 3.107 97 97.66 4758.18 394.38 4698.47 297.12 4982.27 300.00 3.108 98 99.77 4758.15 396.49 4698.42 299.25 4982.22 300.00 3.108 99 94.51 4758.20 391.75 4698.53 294.08 4982.19 300.00 3.108 Critical Failure Surface (circle 1) Intersects: XL: 92.40 YL: 4758.21 XR: 396.49 YR: 4698.42 Centre: XC: 294.01 YC: 4980.37 Radius: R: 300.00 Generated failure surface: (20 points) 92.40 4758 21 105.42 4747.06 119.05 4736.67 133.25 4727.08 4718.31 163.18 4710.40 178.81 4703.37 194.81 4697.25 211.14 4692.04 4687.78 244.56 4684.48 261.54 4682.13 278.62 4680.77 295.75 4680.38 4680.97 329.95 4682.53 346.90 4685.07 363.67 4688.57 380.22 4693.03 4698.42 Slice Geometry and Properties - Critical Failure Surface (circle 1, 42 slices) Slice Test X -S Base 147.97 227.74 312.88 396.49 PoreWater Normal X -Left Area Angle Width Length Matl Cohesion Phi Weight Force Stress Factor 1 92.40 10.63 40.6 5.00 6.58 1 50.00 25.0 1062.74 0.00 175.73 1.17 2 97.40 61.26 40.6 8.02 10.55 2 10.00 35.0 6486.94 0.00 674.70 1.10 3 105.42 146.46 37.3 9.92 12.48 2 10.00 35.0 16166.89 0.00 1386.00 1.07 4 115.34 73.74 37.3 3.71 4.66 2 10.00 35.0 8310.23 411.32 1919.81 1.07 5 119.05 167.84 34.0 7.10 8.57 2 10.00 35.0 19388.37 2793.89 2407.55 1.05 6 126.15 201.36 34.0 7.10 8.57 2 10.00 35.0 23762.23 5358.71 2981.20 1.05 7 133.25 242.03 30.8 7.36 8.57 2 10.00 35.0 28976.62 7812.85 3572.19 1.02 8 140.61 273.73 30.8 7.36 8.57 2 10.00 35.0 33115.30 10156.91 4099.77 1.02 9 147.97 313.67 27.5 7.60 8.57 2 10.00 35.0 38245.86 12386.03 4649.42 1.01 10 155.58 343.13 27.5 7.60 8.57 2 10.00 35.0 42093.95 14501.37 5128.13 1.01 11 163.18 458.50 24.2 9.33 10.23 2 10.00 35.0 56545.32 19922.13 5674.61 0.99 12 172.51 330.87 24.2 6.30 6.90 2 10.00 35.0 40966.24 14954.87 6100.84 0.99 13 178.81 540.24 20.9 9.70 10.39 2 10.00 35.0 67112.45 24614.77 6553.16 0.98 14 188.51 369.88 20.9 6.31 6.75 3 3000.00 0.0 46117.36 17297.19 6938.15 1.07 15 194.81 222.61 17.7 3.69 3.87 3 3000.00 0.0 27829.44 10345.94 7235.76 1.05 16 198.50 91.75 17.7 1.50 1.57 3 3000.00 0.0 9823.99 3310.86 6238.22 1.05 17 200.00 92.47 17.7 1.50 1.57 3 3000.00 0.0 9621.72 1400.71 6103.06 1.05 18 201.50 611.51 17.7 9.64 10.12 3 3000.00 0.0 70982.53 3815.60 7050.40 1.05 19 211.14 327.19 14.4 4.99 5.15 3 3000.00 0.0 38180.22 2627.15 7403.77 1.03 20 216.13 346.69 14.4 5.25 5.42 3 3000.00 0.0 40655.38 3199.56 7493.04 1.03 21 221.38 344.57 14.4 5.25 5.42 3 3000.00 0.0 40688.58 3644.96 7499.36 1.03 22 226.63 581.65 11.5 8.96 9.15 3 3000.00 0.0 69104.84 7054.78 7509.58 1.02 23 235.59 570.66 11.1 8.96 9.14 3 3000.00 0.0 68148.12 8019.47 7410.14 1.02 24 244.56 528.16 7.9 8.49 8.57 3 3000.00 0.0 63366.54 8279.15 7330.00 1.01 25 253.05 514.07 7.9 8.49 8.57 3 3000.00 0.0 61936.80 8878.63 7161.56 1.01 26 261.54 500.95 4.6 8.54 8.57 3 3000.00 0.0 60594.93 9347.52 7015.74 1.00 27 270.08 482.46 4.6 8.54 8.57 3 3000.00 0.0 58577.38 9686.16 6779.54 1.00 28 278.62 463.21 1.3 8.57 8.57 3 3000.00 0.0 56439.60 9894.46 6565.93 1.00 29 287.19 440.41 1.3 8.57 8.57 3 3000.00 0.0 53841.98 9971.71 6262.73 1.00 30 295.75 415.39 -2.0 8.56 8.57 3 3000.00 0.0 50946.87 9918.56 5982.51 1.00 31 304.32 388.41 -2.0 8.56 8.57 3 3000.00 0.0 47785.43 9734.19 5613.38 1.00 32 312.88 358.10 -5.2 8.53 8.57 3 3000.00 0.0 44187.59 9419.30 5268.00 1.00 33 321.41 327.14 -5.2 8.53 8.57 3 3000.00 0.0 40484.88 8973.70 4834.12 1.00 34 329.95 292.17 -8.5 8.47 8.57 3 3000.00 0.0 36261.66 8398.71 4425.21 1.01 35 338.42 257.47 -8.5 8.47 8.57 3 3000.00 0.0 32047.46 7693.24 3927.93 1.01 36 346.90 218.60 -11.8 8.39 8.57 3 3000.00 0.0 27291.38 6859.67 3457.55 1.02 37 355.29 180.45 -11.8 8.39 8.57 3 3000.00 0.0 22602.26 5896.96 2898.49 1.02 38 363.67 138.57 -15.1 8.27 8.57 3 3000.00 0.0 17422.98 4807.23 2368.66 1.04 39 371.95 97.32 -15.1 8.27 8.57 3 3000.00 0.0 12302.52 3590.49 1749.79 1.04 40 380.22 41.66 -18.3 5.63 5.94 3 3000.00 0.0 5312.39 1713.60 1266.83 1.05 41 385.86 20.56 -18.3 5.63 5.94 3 3000.00 0.0 2671.22 1009.81 798.11 1.05 42 391.49 4.44 -18.3 5.00 5.27 3 3000.00 0.0 599.52 291.94 443.79 1.05 X -S Area: 12391.97 Path Length: 325.62 X -S Weight: 1498058.75 GALENA 7.2 Analysis Results Version: 7.2.3.05 Licensee: J & T Consulting Project: Sweet Valley Pit File: P:\23038 CCWCD J2 Meining Farm\DRMS Permit\112 Permit\Slope Stability\Galena\S.V. Pit-SS4-Mining-Pseudo Static.gmf Processed: 29 Feb 2024 14:54:46 DATA: Analysis 1 - SS -4 - Mining Slope - Pseudo Static Material Properties (6 materials) Material: 1 (Mohr -Coulomb Isotropic) - Overburden/Clay Cohesion Phi UnitWeight Ru Unsaturated: 50.00 25.0 100.00 Auto Saturated: 50.00 25.0 115.00 Auto Material: 2 (Mohr -Coulomb Isotropic) - Sand and Gravel Cohesion Phi UnitWeight Ru Unsaturated: 10.00 35.0 115.00 Auto Saturated: 10.00 35.0 130.00 Auto Material: 3 (Mohr -Coulomb Isotropic) - Stable Claystone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 120.00 Auto Saturated: 3000.00 0.0 135.00 Auto Material: 4 (Mohr -Coulomb Isotropic) - Stable Siltstone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 117.00 Auto Saturated: 3000.00 0.0 133.00 Auto Material: 5 (Mohr -Coulomb Isotropic) - Stable Sandstone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 115.00 Auto Saturated: 3000.00 0.0 128.00 Auto Material: 6 (Mohr -Coulomb Isotropic) - Slurry Wall Cohesion Phi UnitWeight Ru Unsaturated: 0.00 45.0 100.00 Auto Saturated: 0.00 45.0 110.00 Auto Water Properties Unit weight of water: 62.400 Unit weight of water/medium above ground: 62.400 Material Profiles (5 profiles) Profile: 1 (9 points) 0.00 4758.73 4757.38 198.50 4757.00 Profile: 2 (2 points) 198.50 4757.00 Profile: 3 (2 points) 0.00 4753.50 Profile: 4 (3 points) 201.50 4753.50 Profile: 5 (5 points) 0.00 4699.82 4697.00 Slope Surface (12 points) 0.00 4758.73 4757.38 198.50 4757.00 4698.54 453.65 4697.06 Material beneath: 1 - Overburden/Clay 0.91 4758.73 43.49 4758.52 97.40 201.50 4757.00 216.13 4757.00 Material beneath: 6 - Slurry Wall 201.50 4757.00 Material beneath: 2 - Sand and Gravel 198.50 4753.50 Material beneath: 2 - Sand and Gravel 226.63 4753.50 391.49 4698.54 Material beneath: 3 - Stable Claystone Bedrock 200.00 4699.65 391.49 4698.54 Phreatic Surface (6 points) 0.00 4697.06 600.00 Failure Surface 4739.50 4697.00 0.91 201.50 600.00 4758.73 4757.00 4697.00 198.50 4739.50 43.49 4758.52 216.13 4757.00 201.50 4699.65 Initial circular surface for critical search defined by: XL,XR,R Intersects: XL: 97.40 YL: 4758.18 XR: 391.49 YR: Centre: XC: 349.61 YC: 5246.94 Radius: R: Earthquake Force Pseudo -static earthquake (seismic) coefficient: 0.070 Variable Restraints Parameter descriptor: Range of variation: Trial positions within range: XL 10.00 20 XR 10.00 20 R 500.00 50 4758.18 172.51 226.63 4753.50 453.65 4697.06 97.40 4758.18 226.63 4753.50 391.49 4698.54 4698.54 550.00 600.00 172.51 391.49 453.65 RESULTS: Analysis 1 - SS -4 - Mining Slope - Pseudo Static Bishop Simplified Method of Analysis - Circular Failure Surface Critical Failure Surface Search using Multiple Circle Generation Techniques Initial failure surface approximation - Factor of Safety: 3.140 Analysis Summary There were: 19979 successful analyses from a total of 20001 trial failure surfaces 22 analyses terminated due to unacceptable geometry Critical (minimum) Factor of Safety: 2.28 Results Summary - Lowest 99 Factor of Safety circles Circle X -Left Y -Left X -Right Y -Right X -Centre Y -Centre Radius FoS 1 92.40 4758.21 396.49 4698.42 294.01 4980.37 300.00 2.279 <-- Critical Surface 2 92.40 4758.21 395.96 4698.43 293.84 4980.52 300.00 2.281 3 92.93 4758.21 396.49 4698.42 294.38 4980.51 300.00 2.282 4 92.40 4758.21 395.44 4698.45 293.68 4980.66 300.00 2.283 5 92.93 4758.21 395.96 4698.43 294.22 4980.65 300.00 2.284 6 93.45 4758.21 396.49 4698.42 294.75 4980.64 300.00 2.285 7 92.40 4758.21 394.91 4698.46 293.53 4980.81 300.00 2.285 8 92.93 4758.21 395.44 4698.45 294.06 4980.80 300.00 2.286 9 93.45 4758.21 395.96 4698.43 294.59 4980.79 300.00 2.287 10 92.40 4758.21 394.38 4698.47 293.37 4980.95 300.00 2.287 11 93.98 4758.20 396.49 4698.42 295.13 4980.78 300.00 2.288 12 92.93 4758.21 394.91 4698.46 293.90 4980.94 300.00 2.288 13 93.45 4758.21 395.44 4698.45 294.43 4980.93 300.00 2.289 14 92.40 4758.21 393.86 4698.48 293.21 4981.10 300.00 2.289 15 93.98 4758.20 395.96 4698.43 294.97 4980.92 300.00 2.290 16 92.93 4758.21 394.38 4698.47 293.74 4981.08 300.00 2.290 17 93.45 4758.21 394.91 4698.46 294.27 4981.08 300.00 2.291 18 94.51 4758.20 396.49 4698.42 295.50 4980.91 300.00 2.291 19 92.40 4758.21 393.33 4698.50 293.05 4981.24 300.00 2.291 20 93.98 4758.20 395.44 4698.45 294.81 4981.07 300.00 2.292 21 92.93 4758.21 393.86 4698.48 293.58 4981.23 300.00 2.292 22 93.45 4758.21 394.38 4698.47 294.11 4981.22 300.00 2.293 23 94.51 4758.20 395.96 4698.43 295.34 4981.06 24 92.40 4758.21 392.81 4698.51 292.89 4981.38 25 93.98 4758.20 394.91 4698.46 294.65 4981.21 26 95.03 4758.20 396.49 4698.42 295.87 4981.05 27 92.93 4758.21 393.33 4698.50 293.42 4981.37 28 93.45 4758.21 393.86 4698.48 293.96 4981.36 29 94.51 4758.20 395.44 4698.45 295.18 4981.20 30 92.40 4758.21 392.28 4698.52 292.73 4981.52 31 93.98 4758.20 394.38 4698.47 294.49 4981.35 32 95.03 4758.20 395.96 4698.43 295.72 4981.19 33 92.93 4758.21 392.81 4698.51 293.26 4981.51 34 93.45 4758.21 393.33 4698.50 293.80 4981.50 35 94.51 4758.20 394.91 4698.46 295.02 4981.34 36 92.40 4758.21 391.75 4698.53 292.57 4981.66 37 95.56 4758.19 396.49 4698.42 296.25 4981.18 38 93.98 4758.20 393.86 4698.48 294.33 4981.49 39 95.03 4758.20 395.44 4698.45 295.56 4981.33 40 92.93 4758.21 392.28 4698.52 293.11 4981.65 41 93.45 4758.21 392.81 4698.51 293.64 4981.65 42 94.51 4758.20 394.38 4698.47 294.86 4981.48 43 95.56 4758.19 395.96 4698.43 296.09 4981.32 44 93.98 4758.20 393.33 4698.50 294.17 4981.63 45 95.03 4758.20 394.91 4698.46 295.40 4981.47 46 92.93 4758.21 391.75 4698.53 292.95 4981.80 47 93.45 4758.21 392.28 4698.52 293.48 4981.79 48 94.51 4758.20 393.86 4698.48 294.71 4981.62 49 95.56 4758.19 395.44 4698.45 295.93 4981.46 50 93.98 4758.20 392.81 4698.51 294.02 4981.78 51 92.40 4758.21 391.23 4698.63 292.35 4981.86 52 95.03 4758.20 394.38 4698.47 295.24 4981.62 53 96.08 4758.19 395.96 4698.43 296.47 4981.45 54 93.45 4758.21 391.75 4698.53 293.32 4981.93 55 94.51 4758.20 393.33 4698.50 294.55 4981.77 56 96.08 4758.19 396.49 4698.42 296.62 4981.31 57 95.56 4758.19 394.91 4698.46 295.77 4981.60 58 93.98 4758.20 392.28 4698.52 293.86 4981.92 59 95.03 4758.20 393.86 4698.48 295.08 4981.76 60 96.08 4758.19 395.44 4698.45 296.31 4981.60 61 94.51 4758.20 392.81 4698.51 294.39 4981.91 62 92.93 4758.21 391.23 4698.63 292.72 4982.00 63 95.56 4758.19 394.38 4698.47 295.62 4981.75 64 92.40 4758.21 390.17 4698.98 291.77 4982.38 65 96.61 4758.19 396.49 4698.42 297.00 4981.44 66 93.98 4758.20 391.75 4698.53 293.70 4982.06 67 95.03 4758.20 393.33 4698.50 294.93 4981.90 300.00 300.00 300.00 300.00 300.00 300.00 300.00 300.00 300.00 300.00 300.00 300.00 300.00 300.00 300.00 300.00 300.00 300.00 300.00 300.00 300.00 300.00 300.00 300.00 300.00 300.00 300.00 300.00 300.00 300.00 300.00 300.00 300.00 300.00 300.00 300.00 300.00 300.00 300.00 300.00 300.00 300.00 300.00 300.00 300.00 2.293 2.293 2.294 2.294 2.294 2.295 2.295 2.295 2.296 2.296 2.296 2.297 2.297 2.297 2.297 2.298 2.298 2.298 2.299 2.299 2.299 2.300 2.300 2.300 2.301 2.301 2.301 2.302 2.302 2.302 2.302 2.303 2.303 2.303 2.303 2.304 2.304 2.304 2.305 2.305 2.305 2.305 2.306 2.306 2.306 68 96.08 4758.19 394.91 4698.46 296.15 4981.74 300.00 2.306 69 94.51 4758.20 392.28 4698.52 294.23 4982.05 300.00 2.307 70 95.56 4758.19 393.86 4698.48 295.46 4981.89 300.00 2.307 71 93.45 4758.21 391.23 4698.63 293.10 4982.13 300.00 2.308 72 96.61 4758.19 395.96 4698.43 296.84 4981.58 300.00 2.308 73 95.03 4758.20 392.81 4698.51 294.77 4982.04 300.00 2.308 74 97.14 4758.18 396.49 4698.42 297.38 4981.58 300.00 2.308 75 92.40 4758.21 389.65 4699.15 291.48 4982.64 300.00 2.308 76 92.93 4758.21 390.17 4698.98 292.15 4982.51 300.00 2.308 77 96.08 4758.19 394.38 4698.47 295.99 4981.88 300.00 2.308 78 94.51 4758.20 391.75 4698.53 294.08 4982.19 300.00 2.309 79 95.56 4758.19 393.33 4698.50 295.30 4982.03 300.00 2.309 80 96.61 4758.19 394.91 4698.46 296.53 4981.87 300.00 2.309 81 95.03 4758.20 392.28 4698.52 294.61 4982.18 300.00 2.310 82 92.40 4758.21 390.70 4698.80 292.06 4982.12 300.00 2.310 83 96.08 4758.19 393.86 4698.48 295.84 4982.02 300.00 2.310 84 96.61 4758.19 395.44 4698.45 296.68 4981.73 300.00 2.310 85 97.14 4758.18 395.96 4698.43 297.22 4981.72 300.00 2.310 86 97.66 4758.18 396.49 4698.42 297.75 4981.71 300.00 2.310 87 93.98 4758.20 391.23 4698.63 293.48 4982.26 300.00 2.311 88 93.45 4758.21 390.17 4698.98 292.52 4982.64 300.00 2.311 89 92.93 4758.21 389.65 4699.15 291.86 4982.77 300.00 2.311 90 92.40 4758.21 389.12 4699.33 291.19 4982.90 300.00 2.311 91 95.56 4758.19 392.81 4698.51 295.14 4982.17 300.00 2.311 92 96.61 4758.19 394.38 4698.47 296.37 4982.01 300.00 2.311 93 95.03 4758.20 391.75 4698.53 294.45 4982.32 300.00 2.312 94 96.08 4758.19 393.33 4698.50 295.68 4982.16 300.00 2.312 95 97.14 4758.18 395.44 4698.45 297.06 4981.86 300.00 2.313 96 97.66 4758.18 395.96 4698.43 297.59 4981.85 300.00 2.313 97 95.56 4758.19 392.28 4698.52 294.99 4982.31 300.00 2.313 98 92.93 4758.21 390.70 4698.80 292.44 4982.25 300.00 2.313 99 96.61 4758.19 393.86 4698.48 296.21 4982.15 300.00 2.313 Critical Failure Surface (circle 1) Intersects: XL: 92.40 YL: 4758.21 XR: 396.49 YR: 4698.42 Centre: XC: 294.01 YC: 4980.37 Radius: R: 300.00 Generated failure surface: (20 points) 92.40 4758 21 105.42 4747.06 119.05 4736.67 133.25 4727.08 4718.31 163 18 4710.40 178.81 4703.37 194.81 4697.25 211.14 4692.04 4687.78 244 56 4684.48 261.54 4682.13 278.62 4680.77 295.75 4680.38 4680.97 147.97 227.74 312.88 329.95 4698.42 4682.53 346.90 4685.07 363.67 4688.57 380.22 4693.03 396.49 Slice Geometry and Properties - Critical Failure Surface (circle 1, 42 slices) Slice X -S Base PoreWater Normal Test X -Left Area Angle Width Length Matl Cohesion Phi Weight Force Stress Factor 1 92.40 10.63 40.6 5.00 6.58 1 50.00 25.0 1062.74 0.00 164.86 1.12 2 97.40 61.26 40.6 8.02 10.55 2 10.00 35.0 6486.94 0.00 637.72 1.04 3 105.42 146.46 37.3 9.92 12.48 2 10.00 35.0 16166.89 0.00 1317.55 1.02 4 115.34 73.74 37.3 3.71 4.66 2 10.00 35.0 8310.23 411.32 1829.58 1.02 5 119.05 167.84 34.0 7.10 8.57 2 10.00 35.0 19388.37 2793.89 2314.75 1.00 6 126.15 201.36 34.0 7.10 8.57 2 10.00 35.0 23762.23 5358.71 2876.25 1.00 7 133.25 242.03 30.8 7.36 8.57 2 10.00 35.0 28976.62 7812.85 3465.64 0.98 8 140.61 273.73 30.8 7.36 8.57 2 10.00 35.0 33115.30 10156.91 3983.11 0.98 9 147.97 313.67 27.5 7.60 8.57 2 10.00 35.0 38245.86 12386.03 4535.13 0.97 10 155.58 343.13 27.5 7.60 8.57 2 10.00 35.0 42093.95 14501.37 5005.61 0.97 11 163.18 458.50 24.2 9.33 10.23 2 10.00 35.0 56545.32 19922.13 5557.55 0.96 12 172.51 330.87 24.2 6.30 6.90 2 10.00 35.0 40966.24 14954.87 5977.32 0.96 13 178.81 540.24 20.9 9.70 10.39 2 10.00 35.0 67112.45 24614.77 6439.37 0.96 14 188.51 369.88 20.9 6.31 6.75 3 3000.00 0.0 46117.36 17297.19 6808.34 1.07 15 194.81 222.61 17.7 3.69 3.87 3 3000.00 0.0 27829.44 10345.94 7127.71 1.05 16 198.50 91.75 17.7 1.50 1.57 3 3000.00 0.0 9823.99 3310.86 6130.26 1.05 17 200.00 92.47 17.7 1.50 1.57 3 3000.00 0.0 9621.72 1400.71 5994.99 1.05 18 201.50 611.51 17.7 9.64 10.12 3 3000.00 0.0 70982.53 3815.60 6942.36 1.05 19 1.03 20 1.03 21 1.03 22 1.02 23 1.02 24 1.01 25 1.01 26 1.00 27 1.00 28 1.00 29 1.00 30 1.00 31 1.00 32 1.00 33 1.00 34 1.01 35 1.01 36 1.02 37 1.02 38 1.04 39 1.04 40 1.05 211.14 327.19 14.4 4.99 5.15 3 3000.00 0.0 38180.22 2627.15 7316.72 216.13 346.69 14.4 5.25 5.42 3 3000.00 0.0 40655.38 3199.56 7405.98 221.38 344.57 14.4 5.25 5.42 3 3000.00 0.0 40688.58 3644.96 7412.31 226.63 581.65 11.5 8.96 9.15 3 3000.00 0.0 69104.84 7054.78 7440.37 235.59 570.66 11.1 8.96 9.14 3 3000.00 0.0 68148.12 8019.47 7343.45 244.56 528.16 7.9 8.49 8.57 3 3000.00 0.0 63366.54 8279.15 7283.24 253.05 514.07 7.9 8.49 8.57 3 3000.00 0.0 61936.80 8878.63 7114.80 261.54 500.95 4.6 8.54 8.57 3 3000.00 0.0 60594.93 9347.52 6988.60 270.08 482.46 4.6 8.54 8.57 3 3000.00 0.0 58577.38 9686.16 6752.40 278.62 463.21 1.3 8.57 8.57 3 3000.00 0.0 56439.60 9894.46 6558.22 287.19 440.41 1.3 8.57 8.57 3 3000.00 0.0 53841.98 9971.71 6255.02 295.75 415.39 -2.0 8.56 8.57 3 3000.00 0.0 50946.87 9918.56 5994.17 304.32 388.41 -2.0 8.56 8.57 3 3000.00 0.0 47785.43 9734.19 5625.04 312.88 358.10 -5.2 8.53 8.57 3 3000.00 0.0 44187.59 9419.30 5299.13 321.41 327.14 -5.2 8.53 8.57 3 3000.00 0.0 40484.88 8973.70 4865.27 329.95 292.17 -8.5 8.47 8.57 3 3000.00 0.0 36261.66 8398.71 4475.99 338.42 257.47 -8.5 8.47 8.57 3 3000.00 0.0 32047.46 7693.24 3978.72 346.90 218.60 -11.8 8.39 8.57 3 3000.00 0.0 27291.38 6859.67 3528.36 355.29 180.45 -11.8 8.39 8.57 3 3000.00 0.0 22602.26 5896.96 2969.28 363.67 138.57 -15.1 8.27 8.57 3 3000.00 0.0 17422.98 4807.23 2459.96 371.95 97.32 -15.1 8.27 8.57 3 3000.00 0.0 12302.52 3590.49 1841.06 380.22 41.66 -18.3 5.63 5.94 3 3000.00 0.0 5312.39 1713.60 1379.23 41 385.86 20.56 -18.3 5.63 5.94 3 3000.00 0.0 2671.22 1009.81 910.53 1.05 42 391.49 4.44 -18.3 5.00 5.27 3 3000.00 0.0 599.52 291.94 556.20 1.05 X -S Area: 12391.97 Path Length: 325.62 X -S Weight: 1498058.75 GALENA 7.2 Analysis Results Version: 7.2.3.05 Licensee: J & T Consulting Project: Sweet Valley Pit File: P:\23038 CCWCD J2 Meining Farm\DRMS Permit\112 Permit\Slope Stability\Galena\S.V. Pit-SS5-Mining.gmf Processed: 05 Mar 2024 08:52:28 DATA: Analysis 1 - SS -5 - Mining Slope - Static Material Properties (6 materials) Material: 1 (Mohr -Coulomb Isotropic) - Overburden/Clay Cohesion Phi UnitWeight Ru Unsaturated: 50.00 25.0 100.00 Auto Saturated: 50.00 25.0 115.00 Auto Material: 2 (Mohr -Coulomb Isotropic) - Sand and Gravel Cohesion Phi UnitWeight Ru Unsaturated: 10.00 35.0 115.00 Auto Saturated: 10.00 35.0 130.00 Auto Material: 3 (Mohr -Coulomb Isotropic) - Stable Claystone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 120.00 Auto Saturated: 3000.00 0.0 135.00 Auto Material: 4 (Mohr -Coulomb Isotropic) - Stable Siltstone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 117.00 Auto Saturated: 3000.00 0.0 133.00 Auto Material: 5 (Mohr -Coulomb Isotropic) - Stable Sandstone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 115.00 Auto Saturated: 3000.00 0.0 128.00 Auto Material: 6 (Mohr -Coulomb Isotropic) - Slurry Wall Cohesion Phi UnitWeight Ru Unsaturated: 0.00 45.0 100.00 Auto Saturated: 0.00 45.0 110.00 Auto Water Properties Unit weight of water: 62.400 Unit weight of water/medium above ground: 62.400 Material Profiles (5 profiles) Profile: 1 (12 points) Material beneath: 1 - Overburden/Clay 0.00 4761.46 142.47 4761.46 200.00 4761.73 211.90 4762.00 234.61 4761.00 254.20 4760.20 290.46 4760.00 298.50 4759.99 316.67 4759.96 328.55 4756.00 Profile: 2 (2 points) Material beneath: 6 - Slurry Wall 298.50 4759.99 301.50 4759.99 Profile: 3 (2 points) Material beneath: 2 - Sand and Gravel 0.00 4756.00 298.50 4756.00 Profile: 4 (3 points) Material beneath: 2 - Sand and Gravel 301.50 4756.00 328.55 4756.00 500.16 4698.80 Profile: 5 (6 points) Material beneath: 3 - Stable Claystone Bedrock 0.00 4699.22 100.00 4699.22 300.00 4699.22 500.16 4698.76 600.00 4698.50 Slope Surface (15 points) 0.00 4761.46 4762.00 234.61 4761.00 4759.99 316.67 4759.96 4698.50 Phreatic Surface (6 points) 0.00 4698.76 600.00 Failure Surface 142.47 254.20 328.55 4742.00 298.50 4698.50 4761.46 4760.20 4756.00 200.00 290.46 500.16 4742.00 301.50 4761.73 4760.00 4698.80 4762.00 233.31 4759.99 301.50 4698.80 564.62 211.90 4762.00 298.50 4759.99 564.62 4698.76 4699.22 500.16 Initial circular surface for critical search defined by: XL,XR,R Intersects: XL: 275.00 YL: 4760.09 XR: 500.16 YR: 4698.80 Centre: XC: 488.06 YC: 5098.62 Radius: R: 400.00 Variable Restraints Parameter descriptor: XL XR R Range of variation: 10.00 10.00 400.00 Trial positions within range: 20 20 50 233.31 301.50 600.00 4698.80 564.62 RESULTS: Analysis 1 - SS -5 - Mining Slope - Static Bishop Simplified Method of Analysis - Circular Failure Surface Critical Failure Surface Search using Multiple Circle Generation Techniques Initial failure surface approximation - Factor of Safety: 3.116 Analysis Summary There were: 16382 successful analyses from a total of 20001 trial failure surfaces 3619 analyses terminated due to unacceptable geometry Critical (minimum) Factor of Safety: 2.45 Results Summary - Lowest 99 Factor of Safety circles Circle X -Left Y -Left X -Right Y -Right X -Centre Y -Centre Radius FoS 1 280.00 4760.06 500.42 4698.80 547.92 5296.92 600.00 2.449 <-- Critical Surface 2 280.00 4760.06 500.42 4698.80 545.69 5288.90 591.84 2.449 3 280.00 4760.06 499.90 4698.89 547.81 5296.97 600.00 2.449 4 280.00 4760.06 500.42 4698.80 543.47 5280.88 583.67 2.449 5 280.00 4760.06 499.90 4698.89 545.58 5288.96 591.84 2.449 6 280.00 4760.06 500.42 4698.80 541.24 5272.86 575.51 2.449 7 280.00 4760.06 499.90 4698.89 543.35 5280.94 583.67 2.450 8 280.00 4760.06 500.42 4698.80 539.01 5264.83 567.35 2.450 9 280.00 4760.06 499.90 4698.89 541.12 5272.92 575.51 2.450 10 280.00 4760.06 499.37 4699.06 547.49 5297.13 600.00 2.450 11 280.00 4760.06 499.90 4698.89 538.89 5264.89 567.35 2.450 12 280.00 4760.06 500.42 4698.80 536.77 5256.80 559.18 2.450 13 280.00 4760.06 499.37 4699.06 545.27 5289.12 591.84 2.450 14 280.00 4760.06 499.90 4698.89 536.66 5256.86 559.18 2.451 15 280.00 4760.06 499.37 4699.06 543.04 5281.10 583.67 2.451 16 280.00 4760.06 500.42 4698.80 534.54 5248.76 551.02 2.451 17 280.00 4760.06 499.37 4699.06 540.81 5273.08 575.51 2.451 18 280.00 4760.06 499.90 4698.89 534.42 5248.83 551.02 2.451 19 280.00 4760.06 500.42 4698.80 532.30 5240.72 542.86 2.451 20 280.00 4760.06 499.37 4699.06 538.58 5265.05 567.35 2.451 21 280.00 4760.06 498.84 4699.24 547.18 5297.29 600.00 2.451 22 280.00 4760.06 498.84 4699.24 544.95 5289.28 591.84 2.452 23 280.00 4760.06 499.90 4698.89 532.18 5240.78 542.86 2.452 24 280.00 4760.06 499.37 4699.06 536.34 5257.02 559.18 2.452 25 280.00 4760.06 500.42 4698.80 530.07 5232.67 534.69 2.452 26 280.00 4760.06 498.84 4699.24 542.72 5281.26 583.67 2.452 27 280.00 4760.06 498.84 4699.24 540.49 5273.24 575.51 2.452 28 280.00 4760.06 499.90 4698.89 529.94 5232.74 534.69 2.452 29 280.00 4760.06 499.37 4699.06 534.11 5248.99 551.02 2.452 30 280.00 4760.06 500.42 4698.80 527.83 5224.62 526.53 2.453 31 280.00 4760.06 498.84 4699.24 538.26 5265.21 567.35 2.453 32 280.00 4760.06 498.32 4699.41 546.86 5297.45 600.00 2.453 33 280.00 4760.06 499.37 4699.06 531.87 5240.95 542.86 2.453 34 280.00 4760.06 498.32 4699.41 544.63 5289.44 591.84 2.453 35 280.00 4760.06 499.90 4698.89 527.70 5224.68 526.53 2.453 36 280.00 4760.06 498.84 4699.24 536.03 5257.18 559.18 2.453 37 280.00 4760.06 498.32 4699.41 542.40 5281.42 583.67 2.453 38 280.00 4760.06 500.42 4698.80 525.59 5216.56 518.37 2.453 39 280.00 4760.06 499.37 4699.06 529.64 5232.90 534.69 2.453 40 280.00 4760.06 498.32 4699.41 540.18 5273.40 575.51 2.453 41 280.00 4760.06 498.84 4699.24 533.80 5249.15 551.02 2.453 42 280.00 4760.06 499.90 4698.89 525.46 5216.62 518.37 2.454 43 280.00 4760.06 498.32 4699.41 537.95 5265.37 567.35 2.454 44 280.00 4760.06 497.79 4699.59 546.54 5297.61 600.00 2.454 45 280.00 4760.06 498.84 4699.24 531.56 5241.11 542.86 2.454 46 279.47 4760.06 500.42 4698.80 547.30 5296.97 600.00 2.454 47 280.00 4760.06 497.79 4699.59 544.31 5289.59 591.84 2.454 48 280.00 4760.06 499.37 4699.06 527.40 5224.85 526.53 2.454 49 280.00 4760.06 500.42 4698.80 523.35 5208.49 510.20 2.454 50 280.00 4760.06 498.32 4699.41 535.72 5257.35 559.18 2.454 51 279.47 4760.06 500.42 4698.80 545.08 5288.95 591.84 2.454 52 279.47 4760.06 499.90 4698.89 547.19 5297.02 600.00 2.454 53 280.00 4760.06 497.79 4699.59 542.09 5281.58 583.67 2.454 54 279.47 4760.06 500.42 4698.80 542.86 5280.93 583.67 2.454 55 279.47 4760.06 499.90 4698.89 544.97 5289.01 591.84 2.454 56 280.00 4760.06 499.90 4698.89 523.22 5208.56 510.20 2.454 57 280.00 4760.06 498.84 4699.24 529.33 5233.06 534.69 2.455 58 280.00 4760.06 498.32 4699.41 533.49 5249.31 551.02 2.455 59 280.00 4760.06 497.79 4699.59 539.86 5273.56 575.51 2.455 60 279.47 4760.06 499.90 4698.89 542.74 5280.99 583.67 2.455 61 279.47 4760.06 500.42 4698.80 540.63 5272.90 575.51 2.455 62 280.00 4760.06 499.37 4699.06 525.16 5216.79 518.37 2.455 63 279.47 4760.06 499.90 4698.89 540.52 5272.96 575.51 2.455 64 279.47 4760.06 500.42 4698.80 538.41 5264.87 567.35 2.455 65 280.00 4760.06 497.79 4699.59 537.63 5265.54 567.35 2.455 66 280.00 4760.06 500.42 4698.80 521.10 5200.41 502.04 2.455 67 280.00 4760.06 497.27 4699.76 546.22 5297.76 600.00 2.455 68 280.00 4760.06 498.32 4699.41 531.25 5241.27 542.86 2.455 69 279.47 4760.06 499.90 4698.89 538.29 5264.93 567.35 2.455 70 280.00 4760.06 498.84 4699.24 527.09 5225.01 526.53 2.455 71 279.47 4760.06 500.42 4698.80 536.18 5256.84 559.18 2.455 72 280.00 4760.06 497.27 4699.76 543.99 5289.75 591.84 2.455 73 279.47 4760.06 499.37 4699.06 546.87 5297.18 600.00 2.455 74 280.00 4760.06 497.79 4699.59 535.40 5257.51 559.18 2.455 75 280.00 4760.06 499.90 4698.89 520.97 5200.49 502.04 2.455 76 279.47 4760.06 499.37 4699.06 544.65 5289.17 591.84 2.455 77 279.47 4760.06 499.90 4698.89 536.06 5256.90 559.18 2.455 78 280.00 4760.06 497.27 4699.76 541.77 5281.74 583.67 2.455 79 280.00 4760.06 499.37 4699.06 522.91 5208.72 510.20 2.456 80 279.47 4760.06 500.42 4698.80 533.95 5248.80 551.02 2.456 81 279.47 4760.06 499.37 4699.06 542.43 5281.15 583.67 2.456 82 280.00 4760.06 498.32 4699.41 529.02 5233.23 534.69 2.456 83 280.00 4760.06 497.79 4699.59 533.17 5249.47 551.02 2.456 84 280.00 4760.06 497.27 4699.76 539.54 5273.72 575.51 2.456 85 279.47 4760.06 499.37 4699.06 540.20 5273.12 575.51 2.456 86 280.00 4760.06 498.84 4699.24 524.85 5216.95 518.37 2.456 87 279.47 4760.06 499.90 4698.89 533.83 5248.86 551.02 2.456 88 280.00 4760.06 500.42 4698.80 518.86 5192.33 493.88 2.456 89 279.47 4760.06 500.42 4698.80 531.72 5240.75 542.86 2.456 90 280.00 4760.06 497.27 4699.76 537.32 5265.70 567.35 2.456 91 279.47 4760.06 499.37 4699.06 537.97 5265.10 567.35 2.456 92 280.00 4760.06 497.79 4699.59 530.94 5241.43 542.86 2.456 93 280.00 4760.06 498.32 4699.41 526.78 5225.17 526.53 2.456 94 280.00 4760.06 496.74 4699.94 545.90 5297.92 600.00 2.456 95 279.47 4760.06 498.84 4699.24 546.56 5297.34 600.00 2.456 96 279.47 4760.06 499.90 4698.89 531.60 5240.82 542.86 2.456 97 280.00 4760.06 499.90 4698.89 518.73 5192.41 493.88 2.456 98 280.00 4760.06 499.37 4699.06 520.67 5200.65 502.04 2.456 99 279.47 4760.06 498.84 4699.24 544.33 5289.32 591.84 2.456 Critical Failure Surface (circle 1) Intersects: XL: 280.00 YL: 4760.06 XR: 500.42 YR: 4698.80 Centre: XC: 547.92 YC: 5296.92 Radius: R: 600.00 Generated failure surface: (20 points) 280.00 4760 06 290.89 4754.76 301.89 4749.68 312.99 4744.82 4740.19 335.47 4735.79 346.85 4731.61 358.30 4727.67 369.83 4723.96 4720.48 393.11 4717.23 404.85 4714.23 416.64 4711.46 428.49 4708.92 4706.63 452.32 4704.58 464.30 4702.77 476.31 4701.21 488.36 4699.88 4698.80 324.19 381.44 440.38 500.42 Slice Geometry and Properties - Critical Failure Surface (circle 1, 41 slices) Slice X -S Base PoreWater Normal Test X -Left Area Angle Width Length Matl Cohesion Phi Weight Force Stress Factor 1 280.00 4.18 25.9 4.17 4.64 1 50.00 25.0 418.21 0.00 82.70 1.02 2 284.17 12.55 25.9 4.17 4.64 1 50.00 25.0 1254.65 0.00 266.27 1.02 3 288.34 9.59 25.9 2.12 2.36 2 10.00 35.0 975.01 0.00 401.96 0.98 4 290.46 23.99 24.9 4.02 4.43 2 10.00 35.0 2517.84 0.00 551.24 0.97 5 294.48 31.43 24.8 4.02 4.43 2 10.00 35.0 3374.14 0.00 739.76 0.97 6 298.50 28.31 24.8 3.00 3.30 6 0.00 45.0 2831.40 0.00 794.02 0.93 7 301.50 65.45 23.7 5.75 6.28 2 10.00 35.0 7183.80 0.00 1109.13 0.97 8 307.25 79.84 23.6 5.75 6.27 2 10.00 35.0 8838.70 0.00 1365.60 0.97 9 312.99 58.49 22.5 3.68 3.98 2 10.00 35.0 6507.33 0.00 1580.69 0.97 10 316.67 63.18 22.5 3.76 4.07 2 10.00 35.0 7077.54 0.00 1682.41 0.97 11 320.43 64.31 22.5 3.76 4.07 2 10.00 35.0 7278.66 0.00 1730.24 0.97 12 324.19 75.86 21.3 4.36 4.68 2 10.00 35.0 8675.95 0.00 1787.45 0.97 13 328.55 122.59 21.3 6.92 7.43 2 10.00 35.0 14097.76 0.00 1830.54 0.97 14 335.47 102.36 20.2 5.69 6.06 2 10.00 35.0 11770.98 0.00 1872.05 0.96 15 341.16 103.45 20.2 5.69 6.06 2 10.00 35.0 11896.85 0.00 1892.03 0.96 16 346.85 104.93 19.0 5.73 6.06 2 10.00 35.0 12066.54 0.00 1916.70 0.96 17 352.57 105.29 19.0 5.73 6.06 2 10.00 35.0 12108.34 0.00 1923.34 0.96 18 358.30 106.00 17.8 5.77 6.06 2 10.00 35.0 12189.70 0.00 1934.60 0.96 19 364.07 105.62 17.8 5.77 6.06 2 10.00 35.0 12145.92 0.00 1927.66 0.96 20 0.96 21 0.96 22 0.96 23 0.96 24 0.96 25 0.96 26 0.96 27 0.96 28 0.96 29 0.96 30 0.97 31 0.97 32 0.97 33 0.97 34 0.97 35 0.97 36 0.97 37 0.97 38 0.98 39 0.98 40 0.98 41 0.98 369.83 105.53 16.7 5.80 6.06 2 10.00 35.0 12135.50 375.63 104.40 16.7 5.80 6.06 2 10.00 35.0 12005.56 381.44 103.50 15.5 5.84 6.06 2 10.00 35.0 11902.03 387.27 101.61 15.5 5.84 6.06 2 10.00 35.0 11685.08 393.11 99.88 14.4 5.87 6.06 2 10.00 35.0 11486.64 398.98 97.23 14.4 5.87 6.06 2 10.00 35.0 11181.53 404.85 94.67 13.2 5.90 6.06 2 10.00 35.0 10887.02 410.74 91.25 13.2 5.90 6.06 2 10.00 35.0 10493.63 416.64 87.84 12.1 5.92 6.06 2 10.00 35.0 10101.64 422.56 83.64 12.1 5.92 6.06 2 10.00 35.0 9618.99 428.49 79.39 10.9 5.95 6.06 2 10.00 35.0 9129.82 434.43 74.41 10.9 5.95 6.06 2 10.00 35.0 8557.64 440.38 69.31 9.7 5.97 6.06 2 10.00 35.0 7970.71 446.35 63.55 9.7 5.97 6.06 2 10.00 35.0 7308.64 452.32 57.60 8.6 5.99 6.06 2 10.00 35.0 6624.21 458.31 51.07 8.6 5.99 6.06 2 10.00 35.0 5872.50 464.30 44.27 7.4 6.01 6.06 2 10.00 35.0 5091.36 470.31 36.95 7.4 6.01 6.06 2 10.00 35.0 4249.80 476.31 29.32 6.3 6.02 6.06 2 10.00 35.0 3372.19 482.34 21.23 6.3 6.02 6.06 2 10.00 35.0 2441.42 488.36 12.53 5.1 5.85 5.88 2 10.00 35.0 1440.55 494.21 4.16 5.1 6.21 6.24 2 10.00 35.0 478.31 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1925.26 1904.62 1888.14 1853.71 1822.97 1774.49 1729.07 1666.60 1606.25 1529.50 1454.03 1362.89 1271.96 1166.25 1059.59 939.28 816.62 681.57 542.55 392.67 239.62 74.71 X -S Area: 2780.75 Path Length: 230.18 X -S Weight: 317244.09 GALENA 7.2 Analysis Results Version: 7.2.3.05 Licensee: J & T Consulting Project: Sweet Valley Pit File: P:\23038 CCWCD J2 Meining Farm\DRMS Permit\112 Permit\Slope Stability\Galena\S.V. Pit-SS5-Mining-Pseudo Static.gmf Processed: 05 Mar 2024 08:54:08 DATA: Analysis 1 - SS -5 - Mining Slope - Pseudo Static Material Properties (6 materials) Material: 1 (Mohr -Coulomb Isotropic) - Overburden/Clay Cohesion Phi UnitWeight Ru Unsaturated: 50.00 25.0 100.00 Auto Saturated: 50.00 25.0 115.00 Auto Material: 2 (Mohr -Coulomb Isotropic) - Sand and Gravel Cohesion Phi UnitWeight Ru Unsaturated: 10.00 35.0 115.00 Auto Saturated: 10.00 35.0 130.00 Auto Material: 3 (Mohr -Coulomb Isotropic) - Stable Cohesion Phi UnitWeight Unsaturated: 3000.00 0.0 120.00 Saturated: 3000.00 0.0 135.00 Material: 4 (Mohr -Coulomb Isotropic) - Stable Cohesion Phi UnitWeight Unsaturated: 3000.00 0.0 117.00 Saturated: 3000.00 0.0 133.00 Material: 5 (Mohr -Coulomb Isotropic) - Stable Cohesion Phi UnitWeight Unsaturated: 3000.00 0.0 115.00 Saturated: 3000.00 0.0 128.00 Material: 6 (Mohr -Coulomb Isotropic) - Slurry Cohesion Phi UnitWeight Unsaturated: 0.00 45.0 100.00 Saturated: 0.00 45.0 110.00 Water Properties Claystone Ru Auto Auto Siltstone Ru Auto Auto Sandstone Ru Auto Auto Wall Ru Auto Auto Bedrock Bedrock Bedrock Unit weight of water: 62.400 Unit weight of water/medium above ground: 62.400 Material Profiles (5 profiles) Profile: 1 (12 points) 0.00 4761.46 4762.00 234 61 4761.00 4759.99 316.67 4759.96 Profile: 2 (2 points) 298.50 4759.99 Profile: 3 (2 points) 0.00 4756.00 Profile: 4 (3 points) 301.50 4756.00 Profile: 5 (6 points) 0.00 4699.22 4698.76 600.00 4698.50 Slope Surface (15 points) 4761.46 4761.00 4759.96 0.00 4762.00 234.61 4759.99 316.67 4698.50 Material beneath: 1 - Overburden/Clay 142.47 4761.46 200.00 254.20 4760.20 4761.73 290.46 4760.00 328.55 4756.00 Material beneath: 6 - Slurry Wall 301.50 4759.99 Material beneath: 2 - Sand and Gravel 298.50 4756.00 Material beneath: 2 - Sand and Gravel 328.55 4756.00 500.16 4698.80 Material beneath: 3 - Stable Claystone Bedrock 100.00 4699.22 300.00 4699.22 Phreatic Surface (6 points) 0.00 4698.76 600.00 Failure Surface 4742.00 4698.50 142.47 254.20 328.55 4761.46 4760.20 4756.00 298.50 4742.00 200.00 290.46 500.16 4761.73 4760.00 4698.80 301.50 4699.22 Initial circular surface for critical search defined by: XL,XR,R Intersects: XL: 275.00 YL: 4760.09 XR: 500.16 YR: Centre: XC: 488.06 YC: 5098.62 Radius: R: Earthquake Force Pseudo -static earthquake (seismic) coefficient: 0.070 Variable Restraints Parameter descriptor: XL XR R 211.90 4762.00 233.31 298.50 4759.99 500.16 4698.80 211.90 4762.00 298.50 4759.99 564.62 4698.76 500.16 4698.80 4698.80 400.00 301.50 564.62 233.31 301.50 600.00 564.62 Range of variation: 10.00 Trial positions within range: 20 20 50 10.00 400.00 RESULTS: Analysis 1 - SS -5 - Mining Slope - Pseudo Static Bishop Simplified Method of Analysis - Circular Failure Surface Critical Failure Surface Search using Multiple Circle Generation Techniques Initial failure surface approximation - Factor of Safety: 2.484 Analysis Summary There were: 16382 successful analyses from a total of 20001 trial failure surfaces 3619 analyses terminated due to unacceptable geometry Critical (minimum) Factor of Safety: 1.94 Results Summary - Lowest 99 Factor of Safety circles Circle X -Left Y -Left X -Right Y -Right X -Centre Y -Centre Radius FoS 1 280.00 4760.06 500.42 4698.80 547.92 5296.92 600.00 1.941 <-- Critical Surface 2 280.00 4760.06 499.90 4698.89 547.81 5296.97 600.00 1.942 3 280.00 4760.06 500.42 4698.80 545.69 5288.90 591.84 1.942 4 280.00 4760.06 499.90 4698.89 545.58 5288.96 591.84 1.942 5 280.00 4760.06 500.42 4698.80 543.47 5280.88 583.67 1.942 6 280.00 4760.06 499.90 4698.89 543.35 5280.94 583.67 1.942 7 280.00 4760.06 499.37 4699.06 547.49 5297.13 600.00 1.942 8 280.00 4760.06 500.42 4698.80 541.24 5272.86 575.51 1.942 9 280.00 4760.06 499.37 4699.06 545.27 5289.12 591.84 1.943 10 280.00 4760.06 499.90 4698.89 541.12 5272.92 575.51 1.943 11 280.00 4760.06 500.42 4698.80 539.01 5264.83 567.35 1.943 12 280.00 4760.06 499.37 4699.06 543.04 5281.10 583.67 1.943 13 280.00 4760.06 499.90 4698.89 538.89 5264.89 567.35 1.943 14 280.00 4760.06 498.84 4699.24 547.18 5297.29 600.00 1.943 15 280.00 4760.06 500.42 4698.80 536.77 5256.80 559.18 1.943 16 280.00 4760.06 499.37 4699.06 540.81 5273.08 575.51 1.943 17 280.00 4760.06 498.84 4699.24 544.95 5289.28 591.84 1.943 18 280.00 4760.06 499.90 4698.89 536.66 5256.86 559.18 1.944 19 280.00 4760.06 498.84 4699.24 542.72 5281.26 583.67 1.944 20 280.00 4760.06 499.37 4699.06 538.58 5265.05 567.35 1.944 21 280.00 4760.06 500.42 4698.80 534.54 5248.76 551.02 1.944 22 280.00 4760.06 498.32 4699.41 546.86 5297.45 600.00 1.944 23 280.00 4760.06 499.90 4698.89 534.42 5248.83 551.02 1.944 24 280.00 4760.06 498.84 4699.24 540.49 5273.24 575.51 1.944 25 280.00 4760.06 498.32 4699.41 544.63 5289.44 591.84 1.944 26 280.00 4760.06 499.37 4699.06 536.34 5257.02 559.18 1.944 27 280.00 4760.06 500.42 4698.80 532.30 5240.72 542.86 1.945 28 280.00 4760.06 498.32 4699.41 542.40 5281.42 583.67 1.945 29 280.00 4760.06 498.84 4699.24 538.26 5265.21 567.35 1.945 30 280.00 4760.06 497.79 4699.59 546.54 5297.61 600.00 1.945 31 280.00 4760.06 499.90 4698.89 532.18 5240.78 542.86 1.945 32 280.00 4760.06 499.37 4699.06 534.11 5248.99 551.02 1.945 33 279.47 4760.06 500.42 4698.80 547.30 5296.97 600.00 1.945 34 280.00 4760.06 498.32 4699.41 540.18 5273.40 575.51 1.945 35 280.00 4760.06 497.79 4699.59 544.31 5289.59 591.84 1.945 36 279.47 4760.06 499.90 4698.89 547.19 5297.02 600.00 1.945 37 280.00 4760.06 498.84 4699.24 536.03 5257.18 559.18 1.945 38 280.00 4760.06 500.42 4698.80 530.07 5232.67 534.69 1.945 39 279.47 4760.06 500.42 4698.80 545.08 5288.95 591.84 1.945 40 279.47 4760.06 499.90 4698.89 544.97 5289.01 591.84 1.945 41 280.00 4760.06 497.79 4699.59 542.09 5281.58 583.67 1.945 42 280.00 4760.06 499.90 4698.89 529.94 5232.74 534.69 1.945 43 280.00 4760.06 498.32 4699.41 537.95 5265.37 567.35 1.945 44 280.00 4760.06 499.37 4699.06 531.87 5240.95 542.86 1.945 45 279.47 4760.06 500.42 4698.80 542.86 5280.93 583.67 1.946 46 280.00 4760.06 497.27 4699.76 546.22 5297.76 600.00 1.946 47 279.47 4760.06 499.90 4698.89 542.74 5280.99 583.67 1.946 48 280.00 4760.06 498.84 4699.24 533.80 5249.15 551.02 1.946 49 279.47 4760.06 499.37 4699.06 546.87 5297.18 600.00 1.946 50 280.00 4760.06 497.79 4699.59 539.86 5273.56 575.51 1.946 51 280.00 4760.06 497.27 4699.76 543.99 5289.75 591.84 1.946 52 280.00 4760.06 500.42 4698.80 527.83 5224.62 526.53 1.946 53 279.47 4760.06 500.42 4698.80 540.63 5272.90 575.51 1.946 54 280.00 4760.06 498.32 4699.41 535.72 5257.35 559.18 1.946 55 279.47 4760.06 499.37 4699.06 544.65 5289.17 591.84 1.946 56 279.47 4760.06 499.90 4698.89 540.52 5272.96 575.51 1.946 57 280.00 4760.06 499.90 4698.89 527.70 5224.68 526.53 1.946 58 280.00 4760.06 499.37 4699.06 529.64 5232.90 534.69 1.946 59 280.00 4760.06 497.27 4699.76 541.77 5281.74 583.67 1.946 60 280.00 4760.06 497.79 4699.59 537.63 5265.54 567.35 1.946 61 280.00 4760.06 498.84 4699.24 531.56 5241.11 542.86 1.946 62 279.47 4760.06 500.42 4698.80 538.41 5264.87 567.35 1.946 63 279.47 4760.06 499.37 4699.06 542.43 5281.15 583.67 1.946 64 280.00 4760.06 496.74 4699.94 545.90 5297.92 600.00 1.946 65 279.47 4760.06 498.84 4699.24 546.56 5297.34 600.00 1.946 66 279.47 4760.06 499.90 4698.89 538.29 5264.93 567.35 1.946 67 280.00 4760.06 498.32 4699.41 533.49 5249.31 551.02 1.946 68 280.00 4760.06 497.27 4699.76 539.54 5273.72 575.51 1.947 69 280.00 4760.06 500.42 4698.80 525.59 5216.56 518.37 1.947 70 279.47 4760.06 499.37 4699.06 540.20 5273.12 575.51 1.947 71 280.00 4760.06 496.74 4699.94 543.67 5289.91 591.84 1.947 72 279.47 4760.06 498.84 4699.24 544.33 5289.32 591.84 1.947 73 280.00 4760.06 497.79 4699.59 535.40 5257.51 559.18 1.947 74 279.47 4760.06 500.42 4698.80 536.18 5256.84 559.18 1.947 75 280.00 4760.06 499.37 4699.06 527.40 5224.85 526.53 1.947 76 279.47 4760.06 499.90 4698.89 536.06 5256.90 559.18 1.947 77 280.00 4760.06 498.84 4699.24 529.33 5233.06 534.69 1.947 78 280.00 4760.06 499.90 4698.89 525.46 5216.62 518.37 1.947 79 279.47 4760.06 498.84 4699.24 542.11 5281.31 583.67 1.947 80 280.00 4760.06 498.32 4699.41 531.25 5241.27 542.86 1.947 81 280.00 4760.06 496.74 4699.94 541.45 5281.90 583.67 1.947 82 280.00 4760.06 497.27 4699.76 537.32 5265.70 567.35 1.947 83 279.47 4760.06 499.37 4699.06 537.97 5265.10 567.35 1.947 84 279.47 4760.06 498.32 4699.41 546.24 5297.50 600.00 1.947 85 280.00 4760.06 496.21 4700.12 545.57 5298.08 600.00 1.947 86 280.00 4760.06 497.79 4699.59 533.17 5249.47 551.02 1.947 87 279.47 4760.06 500.42 4698.80 533.95 5248.80 551.02 1.947 88 279.47 4760.06 498.84 4699.24 539.89 5273.28 575.51 1.947 89 279.47 4760.06 498.32 4699.41 544.01 5289.48 591.84 1.947 90 279.47 4760.06 499.90 4698.89 533.83 5248.86 551.02 1.947 91 280.00 4760.06 496.74 4699.94 539.23 5273.88 575.51 1.947 92 280.00 4760.06 497.27 4699.76 535.09 5257.67 559.18 1.947 93 280.00 4760.06 496.21 4700.12 543.35 5290.07 591.84 1.947 94 280.00 4760.06 500.42 4698.80 523.35 5208.49 510.20 1.947 95 279.47 4760.06 499.37 4699.06 535.75 5257.06 559.18 1.947 96 278.95 4760.06 500.42 4698.80 546.69 5297.01 600.00 1.947 97 280.00 4760.06 498.84 4699.24 527.09 5225.01 526.53 1.947 98 280.00 4760.06 499.37 4699.06 525.16 5216.79 518.37 1.948 99 278.95 4760.06 499.90 4698.89 546.58 5297.07 600.00 1.948 Critical Failure Surface (circle 1) Intersects: XL: 280.00 YL: 4760.06 XR: 500.42 YR: 4698.80 Centre: XC: 547.92 YC: 5296.92 Radius: R: 600.00 Generated failure surface: (20 points) 280.00 4760.06 290.89 4754.76 301.89 4749.68 312.99 4744.82 324.19 4740.19 335.47 4735.79 346.85 4731.61 358.30 4727.67 369.83 4723.96 381.44 4720.48 393.11 4706.63 452.32 4698.80 4717.23 4704.58 404.85 4714.23 464.30 4702.77 416.64 4711.46 428.49 4708.92 440.38 476.31 4701.21 488.36 4699.88 500.42 Slice Geometry and Properties - Critical Failure Surface (circle 1, 41 slices) Slice X -S Base PoreWater Normal Test X -Left Area Angle Width Length Matl Cohesion Phi Weight Force Stress Factor 1 280.00 4.18 25.9 4.17 4.64 1 50.00 25.0 418.21 0.00 78.58 1.00 2 284.17 12.55 25.9 4.17 4.64 1 50.00 25.0 1254.65 0.00 258.18 1.00 3 288.34 9.59 25.9 2.12 2.36 2 10.00 35.0 975.01 0.00 389.09 0.95 4 290.46 23.99 24.9 4.02 4.43 2 10.00 35.0 2517.84 0.00 534.43 0.94 5 294.48 31.43 24.8 4.02 4.43 2 10.00 35.0 3374.14 0.00 717.46 0.94 6 298.50 28.31 24.8 3.00 3.30 6 0.00 45.0 2831.40 0.00 762.40 0.89 7 301.50 65.45 23.7 5.75 6.28 2 10.00 35.0 7183.80 0.00 1077.31 0.94 8 307.25 79.84 23.6 5.75 6.27 2 10.00 35.0 8838.70 0.00 1326.65 0.94 9 312.99 58.49 22.5 3.68 3.98 2 10.00 35.0 6507.33 0.00 1537.81 0.94 10 316.67 63.18 22.5 3.76 4.07 2 10.00 35.0 7077.54 0.00 1636.78 0.94 11 320.43 64.31 22.5 3.76 4.07 2 10.00 35.0 7278.66 0.00 1683.33 0.94 12 324.19 75.86 21.3 4.36 4.68 2 10.00 35.0 8675.95 0.00 1741.40 0.94 13 328.55 122.59 21.3 6.92 7.43 2 10.00 35.0 14097.76 0.00 1783.39 0.94 14 335.47 102.36 20.2 5.69 6.06 2 10.00 35.0 11770.98 0.00 1826.36 0.94 15 341.16 103.45 20.2 5.69 6.06 2 10.00 35.0 11896.85 0.00 1845.85 0.94 16 346.85 104.93 19.0 5.73 6.06 2 10.00 35.0 12066.54 0.00 1872.51 0.94 17 352.57 105.29 19.0 5.73 6.06 2 10.00 35.0 12108.34 0.00 1879.00 0.94 18 0.94 19 0.94 20 0.94 21 0.94 22 0.94 23 0.94 24 0.94 25 0.94 26 0.95 27 0.95 28 0.95 29 0.95 30 0.95 31 0.95 32 0.96 33 0.96 34 0.96 35 0.96 36 0.96 37 0.96 38 0.97 39 0.97 358.30 106.00 17.8 5.77 6.06 2 10.00 35.0 12189.70 0.00 1892.60 364.07 105.62 17.8 5.77 6.06 2 10.00 35.0 12145.92 0.00 1885.80 369.83 105.53 16.7 5.80 6.06 2 10.00 35.0 12135.50 0.00 1886.06 375.63 104.40 16.7 5.80 6.06 2 10.00 35.0 12005.56 0.00 1865.84 381.44 103.50 15.5 5.84 6.06 2 10.00 35.0 11902.03 0.00 1852.24 387.27 101.61 15.5 5.84 6.06 2 10.00 35.0 11685.08 0.00 1818.45 393.11 99.88 14.4 5.87 6.06 2 10.00 35.0 11486.64 0.00 1790.78 398.98 97.23 14.4 5.87 6.06 2 10.00 35.0 11181.53 0.00 1743.13 404.85 94.67 13.2 5.90 6.06 2 10.00 35.0 10887.02 0.00 1700.86 410.74 91.25 13.2 5.90 6.06 2 10.00 35.0 10493.63 0.00 1639.41 416.64 87.84 12.1 5.92 6.06 2 10.00 35.0 10101.64 0.00 1582.22 422.56 83.64 12.1 5.92 6.06 2 10.00 35.0 9618.99 0.00 1506.62 428.49 79.39 10.9 5.95 6.06 2 10.00 35.0 9129.82 0.00 1434.27 434.43 74.41 10.9 5.95 6.06 2 10.00 35.0 8557.64 0.00 1344.36 440.38 69.31 9.7 5.97 6.06 2 10.00 35.0 7970.71 0.00 1256.42 446.35 63.55 9.7 5.97 6.06 2 10.00 35.0 7308.64 0.00 1151.99 452.32 57.60 8.6 5.99 6.06 2 10.00 35.0 6624.21 0.00 1048.09 458.31 51.07 8.6 5.99 6.06 2 10.00 35.0 5872.50 0.00 929.08 464.30 44.27 7.4 6.01 6.06 2 10.00 35.0 5091.36 0.00 808.88 470.31 36.95 7.4 6.01 6.06 2 10.00 35.0 4249.80 0.00 675.10 476.31 29.32 6.3 6.02 6.06 2 10.00 35.0 3372.19 0.00 538.15 482.34 21.23 6.3 6.02 6.06 2 10.00 35.0 2441.42 0.00 389.45 40 0.97 41 0.97 488.36 12.53 5.1 5.85 5.88 2 10.00 35.0 1440.55 0.00 237.97 494.21 4.16 5.1 6.21 6.24 2 10.00 35.0 478.31 0.00 74.13 X -S Area: 2780.75 Path Length: 230.18 X -S Weight: 317244.09 GALENA 7.2 Analysis Results Version: 7.2.3.05 Licensee: J & T Consulting Project: Sweet Valley Pit File: P:\23038 CCWCD J2 Meining Farm\DRMS Permit\112 Permit\Slope Stability\Galena\S.V. Pit-SS6-Mining.gmf Processed: 29 Feb 2024 16:17:22 DATA: Analysis 1 - SS -6 - Mining Slope - Static Material Properties (6 materials) Material: 1 (Mohr -Coulomb Isotropic) - Overburden/Clay Cohesion Phi UnitWeight Ru Unsaturated: 50.00 25.0 100.00 Auto Saturated: 50.00 25.0 115.00 Auto Material: 2 (Mohr -Coulomb Isotropic) - Sand and Gravel Cohesion Phi UnitWeight Ru Unsaturated: 10 00 35.0 115.00 Auto Saturated: 10.00 35.0 130.00 Auto Material: 3 (Mohr -Coulomb Isotropic) - Stable Claystone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 120.00 Auto Saturated: 3000.00 0.0 135.00 Auto Material: 4 (Mohr -Coulomb Isotropic) - Stable Siltstone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 117.00 Auto Saturated: 3000.00 0.0 133.00 Auto Material: 5 (Mohr -Coulomb Isotropic) - Stable Sandstone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 115.00 Auto Saturated: 3000.00 0.0 128.00 Auto Material: 6 (Mohr -Coulomb Isotropic) - Slurry Wall Cohesion Phi UnitWeight Ru Unsaturated: 0.00 45.0 100.00 Auto Saturated: 0.00 45.0 110.00 Auto Water Properties Unit weight of water: 62.400 Unit weight of water/medium above ground: 62.400 Material Profiles (6 profiles) Profile: 1 (13 points) Material beneath: 1 - Overburden/Clay 0.00 4762.00 4762.16 230.00 4762.92 4760.97 261.50 4760.97 Profile: 2 (2 points) 258.50 4760.97 Profile: 3 (2 points) 0.00 4758.50 Profile: 4 (3 points) 261.50 4758.50 Profile: 5 (6 points) 0.00 4700.16 4699.71 600.00 4700.00 Profile: 6 (6 points) 0.00 4698.16 4697.71 600.00 4698.00 Slope Surface (16 points) 0.00 4762.00 4762.16 230.00 4762.92 4760.97 261.50 4760.97 4699.71 600.00 4700.00 130.70 4762.00 234.60 4763.00 170.00 235.91 275.49 4760.88 282.61 Material beneath: 6 - Slurry Wall 261.50 4760.97 Material beneath: 2 - Sand and Gravel 258.50 4758.50 Material beneath: 2 - Sand and Gravel 282.61 4758.50 460.48 4699.21 Material beneath: 4 - Stable Siltstone Bedrock 72.73 4700.16 260.00 4700.10 4762.14 4761.99 4758.50 Material beneath: 3 - Stable Claystone Bedrock 72.73 4698.16 260.00 4698.10 Phreatic Surface (6 points) 0.00 4699.71 600.00 Failure Surface 4744.00 4700.00 130.70 234.60 275.49 4762.00 4763.00 4760.88 258.50 4744.00 170.00 235.91 282.61 4762.14 4761.99 4758.50 261.50 4700.10 Initial circular surface for critical search defined by: XL,XR,R Intersects: XL: 230.00 YL: 4762.92 XR: 460.48 YR: Centre: XC: 432.88 YC: 5048.12 Radius: R: Variable Restraints Parameter descriptor: XL XR R 200.00 244.99 4762.00 218.20 4761.13 258.50 460.48 4699.21 460.48 4697.21 200.00 4762.00 244.99 4761.13 460.48 4699.21 460.48 4699.21 4699.21 350.00 510.84 510.84 218.20 258.50 510.84 510.84 Range of variation: 10.00 Trial positions within range: 20 20 50 10.00 350.00 RESULTS: Analysis 1 - SS -6 - Mining Slope - Static Bishop Simplified Method of Analysis - Circular Failure Surface Critical Failure Surface Search using Multiple Circle Generation Techniques Initial failure surface approximation - Factor of Safety: 3.494 Analysis Summary There were: 16585 successful analyses from a total of 20001 trial failure surfaces 3416 analyses terminated due to unacceptable geometry Critical (minimum) Factor of Safety: 2.46 Results Summary - Lowest 99 Factor of Safety circles Circle X -Left Y -Left X -Right Y -Right X -Centre Y -Centre Radius FoS 1 233.95 4762.99 460.74 4699.21 485.84 5223.61 525.00 2.457 <-- Critical Surface 2 233.95 4762.99 460.22 4699.30 485.72 5223.68 525.00 2.457 3 233.95 4762.99 460.74 4699.21 483.86 5216.55 517.86 2.458 4 233.95 4762.99 460.22 4699.30 483.74 5216.62 517.86 2.458 5 233.95 4762.99 459.69 4699.47 485.42 5223.84 525.00 2.458 6 233.95 4762.99 460.74 4699.21 481.87 5209.49 510.71 2.459 7 233.95 4762.99 460.22 4699.30 481.75 5209.56 510.71 2.459 8 233.95 4762.99 459.69 4699.47 483.44 5216.79 517.86 2.459 9 233.95 4762.99 459.16 4699.65 485.12 5224.01 525.00 2.460 10 233.95 4762.99 460.74 4699.21 479.88 5202.42 503.57 2.460 11 233.95 4762.99 460.22 4699.30 479.76 5202.49 503.57 2.460 12 233.95 4762.99 459.69 4699.47 481.45 5209.72 510.71 2.460 13 233.95 4762.99 459.16 4699.65 483.14 5216.95 517.86 2.460 14 233.95 4762.99 458.64 4699.82 484.82 5224.17 525.00 2.461 15 233.95 4762.99 460.74 4699.21 477.89 5195.34 496.43 2.461 16 233.95 4762.99 459.69 4699.47 479.46 5202.66 503.57 2.461 17 233.95 4762.99 459.16 4699.65 481.15 5209.89 510.71 2.461 18 233.95 4762.99 460.22 4699.30 477.77 5195.42 496.43 2.461 19 233.95 4762.99 458.64 4699.82 482.83 5217.12 517.86 2.461 20 233.95 4762.99 458.11 4700.00 484.52 5224.33 525.00 2.462 21 233.95 4762.99 460.74 4699.21 475.90 5188.26 489.29 2.462 22 233.42 4762.98 460.74 4699.21 485.25 5223.64 525.00 2.462 23 233.95 4762.99 459.16 4699.65 479.16 5202.82 503.57 2.462 24 233.95 4762.99 458.64 4699.82 480.85 5210.06 510.71 2.462 25 233.95 4762.99 459.69 4699.47 477.47 5195.58 496.43 2.462 26 233.95 4762.99 458.11 4700.00 482.53 5217.28 517.86 2.463 27 233.95 4762.99 460.22 4699.30 475.77 5188.34 489.29 2.463 28 233.42 4762.98 460.22 4699.30 485.13 5223.71 525.00 2.463 29 233.95 4762.99 457.59 4700.17 484.21 5224.50 525.00 2.463 30 233.42 4762.98 460.74 4699.21 483.27 5216.58 517.86 2.463 31 233.95 4762.99 458.64 4699.82 478.86 5202.99 503.57 2.463 32 233.95 4762.99 460.74 4699.21 473.91 5181.18 482.14 2.463 33 233.95 4762.99 459.16 4699.65 477.17 5195.75 496.43 2.463 34 233.95 4762.99 458.11 4700.00 480.55 5210.22 510.71 2.463 35 233.42 4762.98 460.22 4699.30 483.14 5216.65 517.86 2.463 36 233.95 4762.99 459.69 4699.47 475.48 5188.50 489.29 2.464 37 233.95 4762.99 457.59 4700.17 482.23 5217.45 517.86 2.464 38 233.42 4762.98 459.69 4699.47 484.82 5223.87 525.00 2.464 39 233.95 4762.99 460.22 4699.30 473.78 5181.25 482.14 2.464 40 233.95 4762.99 457.06 4700.35 483.91 5224.66 525.00 2.464 41 233.42 4762.98 460.74 4699.21 481.28 5209.51 510.71 2.464 42 233.95 4762.99 458.11 4700.00 478.56 5203.16 503.57 2.464 43 233.95 4762.99 458.64 4699.82 476.88 5195.92 496.43 2.464 44 233.42 4762.98 460.22 4699.30 481.16 5209.58 510.71 2.464 45 233.95 4762.99 457.59 4700.17 480.25 5210.39 510.71 2.464 46 233.42 4762.98 459.69 4699.47 482.84 5216.81 517.86 2.465 47 233.95 4762.99 459.16 4699.65 475.18 5188.67 489.29 2.465 48 233.95 4762.99 457.06 4700.35 481.93 5217.61 517.86 2.465 49 233.42 4762.98 459.16 4699.65 484.52 5224.04 525.00 2.465 50 233.95 4762.99 460.74 4699.21 471.91 5174.08 475.00 2.465 51 233.95 4762.99 459.69 4699.47 473.48 5181.42 482.14 2.465 52 233.95 4762.99 456.53 4700.53 483.61 5224.83 525.00 2.465 53 233.42 4762.98 460.74 4699.21 479.30 5202.44 503.57 2.465 54 233.95 4762.99 460.22 4699.30 471.78 5174.16 475.00 2.465 55 233.95 4762.99 458.11 4700.00 476.58 5196.08 496.43 2.465 56 233.95 4762.99 457.59 4700.17 478.27 5203.32 503.57 2.465 57 233.42 4762.98 460.22 4699.30 479.18 5202.51 503.57 2.465 58 233.42 4762.98 459.69 4699.47 480.86 5209.75 510.71 2.465 59 233.95 4762.99 457.06 4700.35 479.95 5210.55 510.71 2.466 60 233.95 4762.99 458.64 4699.82 474.89 5188.84 489.29 2.466 61 233.42 4762.98 459.16 4699.65 482.54 5216.98 517.86 2.466 62 233.95 4762.99 459.16 4699.65 473.19 5181.59 482.14 2.466 63 233.95 4762.99 456.53 4700.53 481.63 5217.77 517.86 2.466 64 233.42 4762.98 458.64 4699.82 484.22 5224.20 525.00 2.466 65 233.95 4762.99 456.01 4700.70 483.30 5224.99 525.00 2.466 66 233.95 4762.99 459.69 4699.47 471.49 5174.33 475.00 2.466 67 233.42 4762.98 460.74 4699.21 477.32 5195.36 496.43 2.466 68 233.95 4762.99 460.74 4699.21 469.92 5166.98 467.86 2.466 69 233.95 4762.99 461.27 4699.22 469.89 5167.00 467.86 2.466 70 233.42 4762.98 459.69 4699.47 478.88 5202.68 503.57 2.467 71 233.95 4762.99 457.59 4700.17 476.28 5196.25 496.43 2.467 72 233.95 4762.99 457.06 4700.35 477.97 5203.49 503.57 2.467 73 233.42 4762.98 459.16 4699.65 480.56 5209.91 510.71 2.467 74 233.42 4762.98 460.22 4699.30 477.19 5195.44 496.43 2.467 75 233.95 4762.99 460.22 4699.30 469.78 5167.06 467.86 2.467 76 233.95 4762.99 458.11 4700.00 474.59 5189.01 489.29 2.467 77 233.95 4762.99 456.53 4700.53 479.65 5210.72 510.71 2.467 78 233.42 4762.98 458.64 4699.82 482.24 5217.14 517.86 2.467 79 233.95 4762.99 458.64 4699.82 472.89 5181.76 482.14 2.467 80 233.95 4762.99 456.01 4700.70 481.33 5217.94 517.86 2.467 81 233.42 4762.98 458.11 4700.00 483.92 5224.36 525.00 2.467 82 233.95 4762.99 459.16 4699.65 471.20 5174.50 475.00 2.467 83 233.95 4762.99 455.48 4700.88 483.00 5225.15 525.00 2.467 84 232.89 4762.97 460.74 4699.21 484.65 5223.67 525.00 2.467 85 233.42 4762.98 460.74 4699.21 475.33 5188.28 489.29 2.467 86 233.42 4762.98 459.16 4699.65 478.58 5202.85 503.57 2.468 87 233.95 4762.99 459.69 4699.47 469.49 5167.23 467.86 2.468 88 233.95 4762.99 457.06 4700.35 475.98 5196.42 496.43 2.468 89 233.95 4762.99 456.53 4700.53 477.67 5203.65 503.57 2.468 90 233.42 4762.98 459.69 4699.47 476.89 5195.60 496.43 2.468 91 233.42 4762.98 458.64 4699.82 480.26 5210.08 510.71 2.468 92 233.95 4762.99 457.59 4700.17 474.29 5189.18 489.29 2.468 93 232.89 4762.97 460.22 4699.30 484.53 5223.73 525.00 2.468 94 233.95 4762.99 460.74 4699.21 467.92 5159.87 460.71 2.468 95 233.95 4762.99 456.01 4700.70 479.35 5210.88 510.71 2.468 96 233.42 4762.98 460.22 4699.30 475.20 5188.35 489.29 2.468 97 233.42 4762.98 458.11 4700.00 481.94 5217.31 517.86 2.468 98 233.95 4762.99 461.27 4699.22 467.89 5159.88 460.71 2.468 99 233.95 4762.99 458.11 4700.00 472.60 5181.92 482.14 2.468 Critical Failure Surface (circle 1) Intersects: XL: 233.95 YL: 4762.99 XR: 460.74 YR: 4699.21 Centre: XC: 485.84 YC: 5223.61 Radius: R: 525.00 Generated failure surface: (20 points) 233.95 4762.99 244.99 4757.12 256.17 4751.52 267.48 4746.18 278.91 4741.11 290.47 4736.32 302.13 4731.81 313.89 4727.57 325.76 4723.61 337.71 4719.94 349.75 4705.91 410.97 4699.21 4716.56 4703.98 361.87 4713.46 423.36 4702.34 374.05 4710.65 386.30 4708.13 398.61 435.80 4701.00 448.26 4699.96 460.74 Slice Geometry and Properties - Critical Failure Surface (circle 1, 42 slices) Slice X -S Base PoreWater Normal Test X -Left Area Angle Width Length Matl Cohesion Phi Weight Force Stress Factor 1 233.95 0.55 28.0 1.96 2.22 1 50.00 25.0 54.82 0.00 15.55 1.03 2 235.91 9.47 28.0 6.48 7.34 1 50.00 25.0 946.85 0.00 122.84 1.03 3 242.39 8.94 28.0 2.60 2.94 2 10.00 35.0 920.88 0.00 306.12 0.98 4 244.99 30.06 26.6 5.59 6.25 2 10.00 35.0 3239.57 0.00 505.28 0.98 5 250.58 45.36 26.6 5.59 6.25 2 10.00 35.0 5004.21 0.00 781.50 0.98 6 256.17 23.34 25.3 2.33 2.58 2 10.00 35.0 2597.27 0.00 981.05 0.97 7 258.50 33.79 25.3 3.00 3.32 6 0.00 45.0 3378.66 0.00 944.79 0.93 8 261.50 79.90 25.3 5.98 6.61 2 10.00 35.0 8969.10 0.00 1320.33 0.97 9 267.48 62.58 23.9 4.00 4.38 2 10.00 35.0 7051.89 0.00 1561.82 0.97 10 271.49 69.59 23.9 4.00 4.38 2 10.00 35.0 7858.75 0.00 1740.70 0.97 11 275.49 63.13 23.9 3.42 3.75 2 10.00 35.0 7166.75 0.00 1856.83 0.97 12 278.91 69.38 22.5 3.70 4.00 2 10.00 35.0 7944.35 0.00 1920.70 0.97 13 282.61 74.94 22.5 3.93 4.25 2 10.00 35.0 8618.20 0.00 1960.78 0.97 14 286.54 76.20 22.5 3.93 4.25 2 10.00 35.0 8762.88 0.00 1993.66 0.97 15 290.47 114.97 21.2 5.83 6.25 2 10.00 35.0 13221.78 0.00 2040.72 0.97 16 296.30 116.80 21.2 5.83 6.25 2 10.00 35.0 13432.31 0.00 2073.24 0.97 17 302.13 119.24 19.8 5.88 6.25 2 10.00 35.0 13712.16 0.00 2112.50 0.96 18 0.96 19 0.96 20 0.96 21 0.96 22 0.96 23 0.96 24 0.96 25 0.96 26 0.96 27 0.96 28 0.96 29 0.96 30 0.96 31 0.97 32 0.97 33 0.97 34 0.97 35 0.97 36 0.97 37 0.98 38 0.98 39 0.98 308.01 120.16 19.8 5.88 6.25 2 10.00 35.0 13818.60 0.00 313.89 121.62 18.4 5.93 6.25 2 10.00 35.0 13986.49 0.00 319.83 121.62 18.4 5.93 6.25 2 10.00 35.0 13986.49 0.00 325.76 122.09 17.1 5.98 6.25 2 10.00 35.0 14039.86 0.00 331.74 121.15 17.1 5.98 6.25 2 10.00 35.0 13931.85 0.00 337.71 120.58 15.7 6.02 6.25 2 10.00 35.0 13867.09 0.00 343.73 118.70 15.7 6.02 6.25 2 10.00 35.0 13650.16 0.00 349.75 117.08 14.3 6.06 6.25 2 10.00 35.0 13464.27 0.00 355.81 114.23 14.3 6.06 6.25 2 10.00 35.0 13136.00 0.00 361.87 111.55 13.0 6.09 6.25 2 10.00 35.0 12828.01 0.00 367.96 107.73 13.0 6.09 6.25 2 10.00 35.0 12388.69 0.00 374.05 103.97 11.6 6.12 6.25 2 10.00 35.0 11957.12 0.00 380.18 99.18 11.6 6.12 6.25 2 10.00 35.0 11405.17 0.00 386.30 94.34 10.2 6.15 6.25 2 10.00 35.0 10848.71 0.00 392.46 88.56 10.2 6.15 6.25 2 10.00 35.0 10184.29 0.00 398.61 82.64 8.9 6.18 6.25 2 10.00 35.0 9503.20 0.00 404.79 75.88 8.9 6.18 6.25 2 10.00 35.0 8726.12 0.00 410.97 68.88 7.5 6.20 6.25 2 10.00 35.0 7921.22 0.00 417.16 61.14 7.5 6.20 6.25 2 10.00 35.0 7031.11 0.00 423.36 53.08 6.2 6.22 6.25 2 10.00 35.0 6103.83 0.00 429.58 44.36 6.2 6.22 6.25 2 10.00 35.0 5101.59 0.00 435.80 35.25 4.8 6.23 6.25 2 10.00 35.0 4053.51 0.00 2128.90 2152.03 2152.03 2158.70 2142.07 2131.71 2098.34 2070.66 2020.19 1974.68 1907.03 1843.43 1758.25 1676.05 1573.36 1472.05 1351.63 1230.96 1092.60 952.12 795.74 635.02 40 0.98 41 0.99 42 0.98 442.03 448.26 454.34 X -S Area: 25.56 15.15 5.04 4.8 6.23 3.4 6.08 3.4 6.41 6.25 2 10.00 35.0 2939.10 6.09 2 10.00 35.0 1742.31 6.42 2 10.00 35.0 579.18 3147.75 Path Length: 237.61 X -S Weight: 360074.38 0.00 0.00 0.00 460.35 281.67 88.65 GALENA 7.2 Analysis Results Version: 7.2.3.05 Licensee: J & T Consulting Project: Sweet Valley Pit File: P:\23038 CCWCD J2 Meining Farm\DRMS Permit\112 Permit\Slope Stability\Galena\S.V. Pit-SS6-Mining-Pseudo Static.gmf Processed: 29 Feb 2024 16:22:20 DATA: Analysis 1 - SS -6 - Mining Slope - Pseudo Static Material Properties (6 materials) Material: 1 (Mohr -Coulomb Isotropic) - Overburden/Clay Cohesion Phi UnitWeight Ru Unsaturated: 50.00 25.0 100.00 Auto Saturated: 50.00 25.0 115.00 Auto Material: 2 (Mohr -Coulomb Isotropic) - Sand and Gravel Cohesion Phi UnitWeight Ru Unsaturated: 10.00 35.0 115.00 Auto Saturated: 10.00 35.0 130.00 Auto Material: 3 (Mohr -Coulomb Isotropic) - Stable Claystone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 120.00 Auto Saturated: 3000.00 0.0 135.00 Auto Material: 4 (Mohr -Coulomb Isotropic) - Stable Siltstone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 117.00 Auto Saturated: 3000.00 0.0 133.00 Auto Material: 5 (Mohr -Coulomb Isotropic) - Stable Sandstone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 115.00 Auto Saturated: 3000.00 0.0 128.00 Auto Material: 6 (Mohr -Coulomb Isotropic) - Slurry Wall Cohesion Phi UnitWeight Ru Unsaturated: 0.00 45.0 100.00 Auto Saturated: 0.00 45.0 110.00 Auto Water Properties Unit weight of water: 62.400 Unit weight of water/medium above ground: 62.400 Material Profiles (6 profiles) Profile: 1 (13 points) 0.00 4762.00 4762.16 230.00 4762.92 4760.97 261.50 4760.97 Profile: 2 (2 points) 258.50 4760.97 Profile: 3 (2 points) 0.00 4758.50 Profile: 4 (3 points) 261.50 4758.50 Profile: 5 (6 points) 0.00 4700.16 4699.71 600.00 4700.00 Profile: 6 (6 points) 0.00 4698.16 4697.71 600.00 4698.00 Slope Surface (16 points) 0.00 4762.00 4762.16 230.00 4762.92 4760.97 261.50 4760.97 4699.71 600.00 4700.00 Material beneath: 1 - Overburden/Clay 130.70 4762.00 170.00 234.60 4763.00 235.91 275.49 4760.88 282.61 Material beneath: 6 - Slurry Wall 261.50 4760.97 Material beneath: 2 - Sand and Gravel 258.50 4758.50 Material beneath: 2 - Sand and Gravel 282.61 4758.50 460.48 4699.21 Material beneath: 4 - Stable Siltstone Bedrock 72.73 4700.16 260.00 4700.10 4762.14 4761.99 4758.50 Material beneath: 3 - Stable Claystone Bedrock 72.73 4698.16 260.00 4698.10 Phreatic Surface (6 points) 0.00 4699.71 600.00 Failure Surface 4744.00 4700.00 130.70 234.60 275.49 4762.00 4763.00 4760.88 258.50 4744.00 170.00 235.91 282.61 4762.14 4761.99 4758.50 261.50 4700.10 Initial circular surface for critical search defined by: XL,XR,R Intersects: XL: 230.00 YL: 4762.92 XR: 460.48 YR: Centre: XC: 432.88 YC: 5048.12 Radius: R: Earthquake Force 200.00 4762.00 218.20 244.99 4761.13 460.48 4699.21 460.48 4697.21 200.00 4762.00 244.99 4761.13 460.48 4699.21 460.48 4699.21 4699.21 350.00 258.50 510.84 510.84 218.20 258.50 510.84 510.84 Pseudo -static earthquake (seismic) coefficient: 0.070 Variable Restraints Parameter descriptor: XL XR R Range of variation: 10.00 10.00 350.00 Trial positions within range: 20 20 50 RESULTS: Analysis 1 - SS -6 - Mining Slope - Pseudo Static Bishop Simplified Method of Analysis - Circular Failure Surface Critical Failure Surface Search using Multiple Circle Generation Techniques Initial failure surface approximation - Factor of Safety: 2.795 Analysis Summary There were: 16585 successful analyses from a total of 20001 trial failure surfaces 3416 analyses terminated due to unacceptable geometry Critical (minimum) Factor of Safety: 1.95 Results Summary - Lowest 99 Factor of Safety circles Circle X -Left Y -Left X -Right Y -Right X -Centre Y -Centre Radius FoS 1 233.95 4762.99 460.74 4699.21 485.84 5223.61 525.00 1.949 <-- Critical Surface 2 233.95 4762.99 460.22 4699.30 485.72 5223.68 525.00 1.950 3 233.95 4762.99 460.74 4699.21 483.86 5216.55 517.86 1.950 4 233.95 4762.99 459.69 4699.47 485.42 5223.84 525.00 1.950 5 233.95 4762.99 460.22 4699.30 483.74 5216.62 517.86 1.950 6 233.95 4762.99 459.16 4699.65 485.12 5224.01 525.00 1.951 7 233.95 4762.99 460.74 4699.21 481.87 5209.49 510.71 1.951 8 233.95 4762.99 459.69 4699.47 483.44 5216.79 517.86 1.951 9 233.95 4762.99 460.22 4699.30 481.75 5209.56 510.71 1.951 10 233.95 4762.99 458.64 4699.82 484.82 5224.17 525.00 1.952 11 233.95 4762.99 459.16 4699.65 483.14 5216.95 517.86 1.952 12 233.95 4762.99 459.69 4699.47 481.45 5209.72 510.71 1.952 13 233.95 4762.99 460.74 4699.21 479.88 5202.42 503.57 1.952 14 233.95 4762.99 460.22 4699.30 479.76 5202.49 503.57 1.952 15 233.95 4762.99 458.11 4700.00 484.52 5224.33 525.00 1.952 16 233.95 4762.99 458.64 4699.82 482.83 5217.12 517.86 1.952 17 233.95 4762.99 459.16 4699.65 481.15 5209.89 510.71 1.953 18 233.42 4762.98 460.74 4699.21 485.25 5223.64 525.00 1.953 19 233.95 4762.99 459.69 4699.47 479.46 5202.66 503.57 1.953 20 233.95 4762.99 457.59 4700.17 484.21 5224.50 525.00 1.953 21 233.95 4762.99 460.74 4699.21 477.89 5195.34 496.43 1.953 22 233.42 4762.98 460.22 4699.30 485.13 5223.71 525.00 1.953 23 233.95 4762.99 458.11 4700.00 482.53 5217.28 517.86 1.953 24 233.95 4762.99 460.22 4699.30 477.77 5195.42 496.43 1.953 25 233.95 4762.99 458.64 4699.82 480.85 5210.06 510.71 1.953 26 233.95 4762.99 459.16 4699.65 479.16 5202.82 503.57 1.954 27 233.42 4762.98 460.74 4699.21 483.27 5216.58 517.86 1.954 28 233.95 4762.99 457.06 4700.35 483.91 5224.66 525.00 1.954 29 233.42 4762.98 459.69 4699.47 484.82 5223.87 525.00 1.954 30 233.95 4762.99 457.59 4700.17 482.23 5217.45 517.86 1.954 31 233.42 4762.98 460.22 4699.30 483.14 5216.65 517.86 1.954 32 233.95 4762.99 459.69 4699.47 477.47 5195.58 496.43 1.954 33 233.95 4762.99 458.11 4700.00 480.55 5210.22 510.71 1.954 34 233.95 4762.99 460.74 4699.21 475.90 5188.26 489.29 1.954 35 233.95 4762.99 458.64 4699.82 478.86 5202.99 503.57 1.954 36 233.95 4762.99 460.22 4699.30 475.77 5188.34 489.29 1.954 37 233.95 4762.99 456.53 4700.53 483.61 5224.83 525.00 1.954 38 233.42 4762.98 459.16 4699.65 484.52 5224.04 525.00 1.954 39 233.95 4762.99 457.06 4700.35 481.93 5217.61 517.86 1.954 40 233.42 4762.98 460.74 4699.21 481.28 5209.51 510.71 1.955 41 233.95 4762.99 459.16 4699.65 477.17 5195.75 496.43 1.955 42 233.42 4762.98 459.69 4699.47 482.84 5216.81 517.86 1.955 43 233.95 4762.99 457.59 4700.17 480.25 5210.39 510.71 1.955 44 233.42 4762.98 460.22 4699.30 481.16 5209.58 510.71 1.955 45 233.95 4762.99 458.11 4700.00 478.56 5203.16 503.57 1.955 46 233.95 4762.99 459.69 4699.47 475.48 5188.50 489.29 1.955 47 233.95 4762.99 456.01 4700.70 483.30 5224.99 525.00 1.955 48 233.42 4762.98 458.64 4699.82 484.22 5224.20 525.00 1.955 49 233.95 4762.99 458.64 4699.82 476.88 5195.92 496.43 1.955 50 233.95 4762.99 456.53 4700.53 481.63 5217.77 517.86 1.955 51 233.95 4762.99 460.74 4699.21 473.91 5181.18 482.14 1.955 52 233.42 4762.98 459.16 4699.65 482.54 5216.98 517.86 1.955 53 233.95 4762.99 457.06 4700.35 479.95 5210.55 510.71 1.955 54 233.42 4762.98 459.69 4699.47 480.86 5209.75 510.71 1.955 55 233.95 4762.99 460.22 4699.30 473.78 5181.25 482.14 1.955 56 233.42 4762.98 460.74 4699.21 479.30 5202.44 503.57 1.955 57 233.95 4762.99 457.59 4700.17 478.27 5203.32 503.57 1.956 58 233.95 4762.99 459.16 4699.65 475.18 5188.67 489.29 1.956 59 233.42 4762.98 460.22 4699.30 479.18 5202.51 503.57 1.956 60 233.42 4762.98 458.11 4700.00 483.92 5224.36 525.00 1.956 61 233.95 4762.99 455.48 4700.88 483.00 5225.15 525.00 1.956 62 233.95 4762.99 458.11 4700.00 476.58 5196.08 496.43 1.956 63 233.95 4762.99 456.01 4700.70 481.33 5217.94 517.86 1.956 64 233.42 4762.98 458.64 4699.82 482.24 5217.14 517.86 1.956 65 233.95 4762.99 456.53 4700.53 479.65 5210.72 510.71 1.956 66 233.95 4762.99 459.69 4699.47 473.48 5181.42 482.14 1.956 67 233.42 4762.98 459.16 4699.65 480.56 5209.91 510.71 1.956 68 232.89 4762.97 460.74 4699.21 484.65 5223.67 525.00 1.956 69 233.95 4762.99 457.06 4700.35 477.97 5203.49 503.57 1.956 70 233.95 4762.99 458.64 4699.82 474.89 5188.84 489.29 1.956 71 233.42 4762.98 459.69 4699.47 478.88 5202.68 503.57 1.956 72 233.95 4762.99 460.74 4699.21 471.91 5174.08 475.00 1.956 73 232.89 4762.97 460.22 4699.30 484.53 5223.73 525.00 1.956 74 233.42 4762.98 460.74 4699.21 477.32 5195.36 496.43 1.956 75 233.95 4762.99 457.59 4700.17 476.28 5196.25 496.43 1.956 76 233.42 4762.98 457.59 4700.17 483.61 5224.53 525.00 1.956 77 233.95 4762.99 455.48 4700.88 481.02 5218.10 517.86 1.957 78 233.42 4762.98 458.11 4700.00 481.94 5217.31 517.86 1.957 79 233.95 4762.99 460.22 4699.30 471.78 5174.16 475.00 1.957 80 233.95 4762.99 459.16 4699.65 473.19 5181.59 482.14 1.957 81 233.95 4762.99 456.01 4700.70 479.35 5210.88 510.71 1.957 82 233.42 4762.98 460.22 4699.30 477.19 5195.44 496.43 1.957 83 233.42 4762.98 458.64 4699.82 480.26 5210.08 510.71 1.957 84 233.95 4762.99 458.11 4700.00 474.59 5189.01 489.29 1.957 85 233.95 4762.99 456.53 4700.53 477.67 5203.65 503.57 1.957 86 232.89 4762.97 460.74 4699.21 482.68 5216.60 517.86 1.957 87 233.42 4762.98 459.16 4699.65 478.58 5202.85 503.57 1.957 88 232.89 4762.97 459.69 4699.47 484.23 5223.90 525.00 1.957 89 233.95 4762.99 457.06 4700.35 475.98 5196.42 496.43 1.957 90 233.42 4762.98 457.06 4700.35 483.31 5224.69 525.00 1.957 91 233.95 4762.99 459.69 4699.47 471.49 5174.33 475.00 1.957 92 232.89 4762.97 460.22 4699.30 482.55 5216.67 517.86 1.957 93 233.42 4762.98 457.59 4700.17 481.64 5217.47 517.86 1.957 94 233.95 4762.99 458.64 4699.82 472.89 5181.76 482.14 1.957 95 233.42 4762.98 459.69 4699.47 476.89 5195.60 496.43 1.957 96 233.95 4762.99 455.48 4700.88 479.05 5211.05 510.71 1.957 97 233.42 4762.98 458.11 4700.00 479.96 5210.25 510.71 1.957 98 233.95 4762.99 457.59 4700.17 474.29 5189.18 489.29 1.957 99 233.42 4762.98 460.74 4699.21 475.33 5188.28 489.29 1.958 Critical Failure Surface (circle 1) Intersects: XL: Centre: XC: 233.95 YL: 4762.99 XR: 460.74 YR: 4699.21 485.84 YC: 5223.61 Radius: R: 525.00 Generated failure surface: (20 points) 233.95 4762.99 244.99 4757.12 4741.11 290.47 4736.32 302.13 4731.81 4719.94 349.75 4716.56 361.87 4713.46 4705.91 410.97 4703.98 423.36 4702.34 4699.21 256.17 4751.52 313.89 4727.57 374.05 4710.65 435.80 4701.00 Slice Geometry and Properties - Critical Failure Surface (circle 1, 42 slices) 267.48 4746.18 278.91 325.76 4723.61 337.71 386.30 4708.13 398.61 448.26 4699.96 460.74 Slice X -S Base PoreWater Normal Test X -Left Area Angle Width Length Matl Cohesion Phi Weight Force Stress Factor 1 233.95 0.55 28.0 1.96 2.22 1 50.00 25.0 54.82 0.00 12.69 1.00 2 235.91 9.47 28.0 6.48 7.34 1 50.00 25.0 946.85 0.00 117.48 1.00 3 242.39 8.94 28.0 2.60 2.94 2 10.00 35.0 920.88 0.00 295.51 0.95 4 244.99 30.06 26.6 5.59 6.25 2 10.00 35.0 3239.57 0.00 488.89 0.95 5 250.58 45.36 26.6 5.59 6.25 2 10.00 35.0 5004.21 0.00 756.41 0.95 6 256.17 23.34 25.3 2.33 2.58 2 10.00 35.0 2597.27 0.00 951.25 0.95 7 258.50 33.79 25.3 3.00 3.32 6 0.00 45.0 3378.66 0.00 906.74 0.89 8 261.50 79.90 25.3 5.98 6.61 2 10.00 35.0 8969.10 0.00 1280.37 0.95 9 267.48 62.58 23.9 4.00 4.38 2 10.00 35.0 7051.89 0.00 1517.11 0.94 10 271.49 69.59 23.9 4.00 4.38 2 10.00 35.0 7858.75 0.00 1690.92 0.94 11 275.49 63.13 23.9 3.42 3.75 2 10.00 35.0 7166.75 0.00 1803.75 0.94 12 278.91 69.38 22.5 3.70 4.00 2 10.00 35.0 7944.35 0.00 1868.86 0.94 13 282.61 74.94 22.5 3.93 4.25 2 10.00 35.0 8618.20 0.00 1907.87 0.94 14 286.54 76.20 22.5 3.93 4.25 2 10.00 35.0 8762.88 0.00 1939.86 0.94 15 0.94 16 0.94 17 0.94 18 0.94 19 0.94 20 0.94 21 0.94 22 0.94 23 0.94 24 0.94 25 0.95 26 0.95 27 0.95 28 0.95 29 0.95 30 0.95 31 0.95 32 0.95 33 0.96 34 0.96 35 0.96 36 0.96 290.47 296.30 302.13 308.01 313.89 319.83 325.76 331.74 337.71 343.73 349.75 355.81 361.87 367.96 374.05 380.18 386.30 392.46 398.61 404.79 410.97 417.16 114.97 116.80 119.24 120.16 121.62 121.62 122.09 121.15 120.58 118.70 117.08 114.23 111.55 107.73 103.97 99.18 94.34 88.56 82.64 75.88 68.88 61.14 21.2 5.83 21.2 19.8 19.8 18.4 18.4 17.1 17.1 15.7 15.7 14.3 14.3 13.0 13.0 11.6 11.6 10.2 10.2 8.9 8.9 7.5 7.5 5.83 5.88 5.88 5.93 5.93 5.98 5.98 6.02 6.02 6.06 6.06 6.09 6.09 6.12 6.12 6.15 6.15 6.18 6.18 6.20 6.20 6.25 2 10.00 35.0 13221.78 6.25 2 10.00 35.0 13432.31 6.25 2 10.00 35.0 13712.16 6.25 2 10.00 35.0 13818.60 6.25 2 10.00 35.0 13986.49 6.25 2 10.00 35.0 13986.49 6.25 2 10.00 35.0 14039.86 6.25 2 10.00 35.0 13931.85 6.25 2 10.00 35.0 13867.09 6.25 2 10.00 35.0 13650.16 6.25 2 10.00 35.0 13464.27 6.25 2 10.00 35.0 13136.00 6.25 2 10.00 35.0 12828.01 6.25 2 10.00 35.0 12388.69 6.25 2 10.00 35.0 11957.12 6.25 2 10.00 35.0 11405.17 6.25 2 10.00 35.0 10848.71 6.25 2 10.00 35.0 10184.29 6.25 2 10.00 35.0 9503.20 6.25 2 10.00 35.0 8726.12 6.25 2 10.00 35.0 7921.22 6.25 2 10.00 35.0 7031.11 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 1988.88 2020.58 2062.18 2078.19 2104.16 2104.16 2114.10 2097.81 2091.03 2058.29 2034.42 1984.85 1943.26 1876.68 1817.05 1733.08 1654.75 1553.36 1455.73 1336.63 1219.31 1082.26 37 0.97 38 0.97 39 0.97 40 0.97 41 0.98 42 0.98 423.36 429.58 435.80 442.03 448.26 454.34 53.08 44.36 35.25 25.56 15.15 5.04 X -S Area: 3147.75 6.2 6.22 6.2 6.22 4.8 6.23 4.8 6.23 3.4 6.08 3.4 6.41 6.25 2 10.00 35.0 6103.83 6.25 2 10.00 35.0 5101.59 6.25 2 10.00 35.0 4053.51 6.25 2 10.00 35.0 2939.10 6.09 2 10.00 35.0 1742.31 6.42 2 10.00 35.0 579.18 Path Length: 237.61 X -S Weight: 360074.38 0.00 0.00 0.00 0.00 0.00 0.00 944.68 789.50 631.11 457.48 280.39 88.20 GALENA 7.2 Analysis Results Version: 7.2.3.05 Licensee: J & T Consulting Project: Sweet Valley Pit File: P:\23038 CCWCD J2 Meining Farm\DRMS Permit\112 Permit\Slope Stability\Galena\S.V. Pit-SS7N-Mining.gmf Processed: 04 Mar 2024 10:37:11 DATA: Analysis 1 - SS -7N - Mining Slope - Static Material Properties (6 materials) Material: 1 (Mohr -Coulomb Isotropic) - Overburden/Clay Cohesion Phi UnitWeight Ru Unsaturated: 50.00 25.0 100.00 Auto Saturated: 50.00 25.0 115.00 Auto Material: 2 (Mohr -Coulomb Isotropic) - Sand and Cohesion Phi UnitWeight Unsaturated: 10.00 35.0 115.00 Saturated: 10.00 35.0 130.00 Material: 3 (Mohr -Coulomb Isotropic) - Stable Cohesion Phi UnitWeight Unsaturated: 3000.00 0.0 120.00 Saturated: 3000.00 0.0 135.00 Material: 4 (Mohr -Coulomb Isotropic) - Stable Cohesion Phi UnitWeight Unsaturated: 3000.00 0.0 117.00 Saturated: 3000.00 0.0 133.00 Material: 5 (Mohr -Coulomb Isotropic) - Stable Cohesion Phi UnitWeight Unsaturated: 3000.00 0.0 115.00 Saturated: 3000.00 0.0 128.00 Material: 6 (Mohr -Coulomb Isotropic) - Slurry Cohesion Phi UnitWeight Unsaturated: 0.00 45.0 100.00 Saturated: 0.00 45.0 110.00 Water Properties Unit weight of water: 62.400 Material Profiles (6 profiles) Profile: 1 (12 points) Material beneath: 1 - Overburden/Clay Gravel Ru Auto Auto Claystone Ru Auto Auto Siltstone Ru Auto Auto Sandstone Ru Auto Auto Wall Ru Auto Auto Bedrock Bedrock Bedrock Unit weight of water/medium above ground: 62.400 260.00 4758.00 274.00 4757.98 280.30 4756.02 285.75 4754.07 297.25 4755.96 302.42 4758.00 319.91 4757.00 341.16 4756.01 357.46 4756.00 369.76 4752.00 Profile: 2 (2 points) Material beneath: 6 - Slurry Wall 341.16 4756.01 344.16 4756.01 Profile: 3 (2 points) Material beneath: 2 - Sand and Gravel 260.00 4752.00 341.16 4752.00 Profile: 4 (3 points) Material beneath: 2 - Sand and Gravel 344.16 4752.00 369.76 4752.00 529.88 4698.63 Profile: 5 (5 points) Material beneath: 3 - Stable Claystone Bedrock 260.00 4698.71 342.60 4698.71 529.88 4698.63 555.95 4698.69 Profile: 6 (5 points) Material beneath: 5 - Stable Sandstone Bedrock 260.00 4685.69 342.60 4685.69 529.88 4685.69 555.95 4685.69 Slope Surface (15 points) 260.00 4758.00 4754.07 297.25 4755.96 4756.01 357.46 4756.00 4698.69 Phreatic Surface (6 points) 260.00 4698.69 600.00 Failure Surface 274.00 302.42 369.76 4738.00 341.16 4698.69 4757.98 4758.00 4752.00 280.30 319.91 529.88 4738.00 344.16 4756.02 4757.00 4698.63 4754.54 291.85 4756.01 344.16 4698.69 600.00 4685.69 600.00 285.75 4754.54 341.16 4756.01 555.95 4698.69 4698.71 529.88 Initial circular surface for critical search defined by: XL,XR,R Intersects: XL: 302.42 YL: 4758.00 XR: 529.88 YR: 4698.63 Centre: XC: 499.41 YC: 5047.30 Radius: R: 350.00 Variable Restraints Parameter descriptor: XL XR R Range of variation: 10.00 10.00 350.00 Trial positions within range: 20 20 50 291.85 344.16 600.00 4698.63 555.95 RESULTS: Analysis 1 - SS -7N - Mining Slope - Static Bishop Simplified Method of Analysis - Circular Failure Surface Critical Failure Surface Search using Multiple Circle Generation Techniques Initial failure surface approximation - Factor of Safety: 3.708 Analysis Summary There were: 18251 successful analyses from a total of 20001 trial failure surfaces 1750 analyses terminated due to unacceptable geometry Critical (minimum) Factor of Safety: 2.60 Results Summary - Lowest 99 Factor of Safety circles Circle X -Left Y -Left X -Right Y -Right X -Centre Y -Centre Radius FoS 1 307.42 4757.71 530.14 4698.63 550.12 5223.25 525.00 2.596 <-- Critical Surface 2 307.42 4757.71 530.14 4698.63 548.24 5216.17 517.86 2.597 3 307.42 4757.71 529.62 4698.72 549.98 5223.32 525.00 2.597 4 307.42 4757.71 530.14 4698.63 546.36 5209.09 510.71 2.598 5 307.42 4757.71 529.62 4698.72 548.10 5216.25 517.86 2.598 6 307.42 4757.71 528.56 4699.07 547.46 5216.58 517.86 2.598 7 307.42 4757.71 529.09 4698.89 544.02 5202.24 503.57 2.598 8 307.42 4757.71 529.62 4698.72 540.57 5187.88 489.29 2.599 9 306.89 4757.74 530.14 4698.63 549.61 5223.27 525.00 2.599 10 307.42 4757.71 528.56 4699.07 545.58 5209.50 510.71 2.599 11 307.42 4757.71 530.14 4698.63 544.48 5202.00 503.57 2.599 12 307.42 4757.71 529.62 4698.72 546.22 5209.16 510.71 2.599 13 307.42 4757.71 529.09 4698.89 542.14 5195.15 496.43 2.599 14 307.42 4757.71 528.04 4699.24 549.01 5223.82 525.00 2.599 15 307.42 4757.71 529.09 4698.89 549.66 5223.49 525.00 2.599 16 306.89 4757.74 529.62 4698.72 549.47 5223.34 525.00 2.599 17 306.89 4757.74 530.14 4698.63 547.74 5216.19 517.86 2.600 18 307.42 4757.71 529.62 4698.72 538.68 5180.78 482.14 2.600 19 307.42 4757.71 528.56 4699.07 543.70 5202.41 503.57 2.600 20 307.42 4757.71 528.04 4699.24 547.14 5216.75 517.86 2.600 21 307.42 4757.71 530.67 4698.63 542.57 5194.92 496.43 2.600 22 307.42 4757.71 529.09 4698.89 547.78 5216.41 517.86 2.600 23 307.42 4757.71 529.62 4698.72 544.33 5202.07 503.57 2.600 24 307.42 4757.71 529.09 4698.89 540.25 5188.05 489.29 2.600 25 307.42 4757.71 530.14 4698.63 536.94 5173.58 475.00 2.600 26 307.42 4757.71 530.14 4698.63 542.60 5194.90 496.43 2.600 27 306.89 4757.74 529.62 4698.72 547.59 5216.26 517.86 2.600 28 306.89 4757.74 530.14 4698.63 545.86 5209.10 510.71 2.600 29 307.42 4757.71 528.04 4699.24 545.26 5209.67 510.71 2.601 30 307.42 4757.71 528.56 4699.07 541.82 5195.32 496.43 2.601 31 307.42 4757.71 527.51 4699.42 548.69 5223.99 525.00 2.601 32 307.42 4757.71 529.62 4698.72 536.79 5173.66 475.00 2.601 33 306.89 4757.74 529.62 4698.72 545.72 5209.18 510.71 2.601 34 307.42 4757.71 529.09 4698.89 545.90 5209.33 510.71 2.601 35 306.89 4757.74 529.09 4698.89 549.15 5223.51 525.00 2.601 36 307.42 4757.71 530.67 4698.63 540.69 5187.81 489.29 2.601 37 306.89 4757.74 530.14 4698.63 543.98 5202.01 503.57 2.601 38 307.42 4757.71 528.56 4699.07 549.33 5223.66 525.00 2.601 39 307.42 4757.71 529.62 4698.72 542.45 5194.98 496.43 2.601 40 307.42 4757.71 529.09 4698.89 538.37 5180.95 482.14 2.601 41 307.42 4757.71 530.14 4698.63 540.71 5187.80 489.29 2.601 42 307.42 4757.71 530.14 4698.63 535.05 5166.46 467.86 2.602 43 307.42 4757.71 528.04 4699.24 543.38 5202.58 503.57 2.602 44 307.42 4757.71 527.51 4699.42 546.81 5216.92 517.86 2.602 45 307.42 4757.71 528.56 4699.07 539.94 5188.22 489.29 2.602 46 306.89 4757.74 529.09 4698.89 547.27 5216.43 517.86 2.602 47 306.89 4757.74 529.62 4698.72 543.84 5202.09 503.57 2.602 48 306.89 4757.74 530.14 4698.63 542.10 5194.92 496.43 2.602 49 307.42 4757.71 529.62 4698.72 534.90 5166.54 467.86 2.602 50 306.89 4757.74 530.67 4698.63 542.08 5194.93 496.43 2.602 51 307.42 4757.71 527.51 4699.42 544.94 5209.84 510.71 2.602 52 307.42 4757.71 528.04 4699.24 541.50 5195.49 496.43 2.602 53 307.42 4757.71 530.67 4698.63 538.81 5180.71 482.14 2.603 54 307.42 4757.71 529.09 4698.89 536.48 5173.84 475.00 2.603 55 307.42 4757.71 526.99 4699.59 548.36 5224.16 525.00 2.603 56 306.89 4757.74 529.09 4698.89 545.40 5209.35 510.71 2.603 57 307.42 4757.71 530.14 4698.63 538.83 5180.69 482.14 2.603 58 306.89 4757.74 528.56 4699.07 548.83 5223.68 525.00 2.603 59 307.42 4757.71 528.56 4699.07 538.05 5181.12 482.14 2.603 60 306.89 4757.74 529.62 4698.72 541.96 5194.99 496.43 2.603 61 307.42 4757.71 530.14 4698.63 533.16 5159.33 460.71 2.603 62 307.42 4757.71 530.67 4698.63 533.15 5159.34 460.71 2.603 63 306.89 4757.74 530.14 4698.63 540.22 5187.81 489.29 2.603 64 307.42 4757.71 527.51 4699.42 543.06 5202.75 503.57 2.603 65 306.89 4757.74 530.67 4698.63 540.20 5187.82 489.29 2.603 66 307.42 4757.71 526.99 4699.59 546.49 5217.08 517.86 2.603 67 307.42 4757.71 528.04 4699.24 539.62 5188.39 489.29 2.604 68 306.89 4757.74 528.56 4699.07 546.95 5216.60 517.86 2.604 69 306.89 4757.74 529.09 4698.89 543.52 5202.26 503.57 2.604 70 307.42 4757.71 529.62 4698.72 533.01 5159.42 460.71 2.604 71 307.42 4757.71 529.09 4698.89 534.59 5166.72 467.86 2.604 72 307.42 4757.71 530.67 4698.63 536.92 5173.59 475.00 2.604 73 306.89 4757.74 529.62 4698.72 540.08 5187.89 489.29 2.604 74 306.37 4757.77 530.14 4698.63 549.11 5223.29 525.00 2.604 75 307.42 4757.71 526.99 4699.59 544.62 5210.00 510.71 2.604 76 307.42 4757.71 528.56 4699.07 536.17 5174.01 475.00 2.604 77 307.42 4757.71 527.51 4699.42 541.18 5195.66 496.43 2.604 78 307.42 4757.71 526.46 4699.77 548.04 5224.33 525.00 2.604 79 306.89 4757.74 530.14 4698.63 538.34 5180.70 482.14 2.604 80 306.89 4757.74 528.56 4699.07 545.08 5209.52 510.71 2.604 81 306.89 4757.74 530.67 4698.63 538.32 5180.71 482.14 2.605 82 307.42 4757.71 530.67 4698.63 531.26 5152.20 453.57 2.605 83 307.42 4757.71 530.14 4698.63 531.27 5152.20 453.57 2.605 84 307.42 4757.71 528.04 4699.24 537.74 5181.29 482.14 2.605 85 306.89 4757.74 528.04 4699.24 548.50 5223.84 525.00 2.605 86 306.89 4757.74 529.09 4698.89 541.64 5195.16 496.43 2.605 87 306.37 4757.77 529.62 4698.72 548.97 5223.36 525.00 2.605 88 306.37 4757.77 530.14 4698.63 547.23 5216.21 517.86 2.605 89 307.42 4757.71 526.99 4699.59 542.74 5202.92 503.57 2.605 90 307.42 4757.71 526.46 4699.77 546.17 5217.25 517.86 2.605 91 306.89 4757.74 529.62 4698.72 538.19 5180.78 482.14 2.605 92 307.42 4757.71 527.51 4699.42 539.30 5188.56 489.29 2.605 93 307.42 4757.71 529.62 4698.72 531.12 5152.29 453.57 2.605 94 307.42 4757.71 529.09 4698.89 532.70 5159.59 460.71 2.605 95 306.89 4757.74 528.56 4699.07 543.20 5202.43 503.57 2.605 96 306.89 4757.74 528.04 4699.24 546.63 5216.77 517.86 2.605 97 307.42 4757.71 528.56 4699.07 534.28 5166.89 467.86 2.605 98 307.42 4757.71 530.67 4698.63 535.04 5166.47 467.86 2.605 99 306.37 4757.77 529.62 4698.72 547.09 5216.28 517.86 2.606 Critical Failure Surface (circle 1) Intersects: XL: 307.42 YL: 4757.71 XR: 530.14 YR: 4698.63 Centre: XC: 550.12 YC: 5223.25 Radius: R: 525.00 Generated failure surface: (20 points) 307.42 4757.71 318.33 4752.19 329.36 4746.92 340.51 4741.91 4737.16 363.15 4732.67 374.63 4728.45 386.20 4724.50 397.86 4720.81 4717.40 421.42 4714.27 433.31 4711.41 445.26 4708.83 457.27 4706.53 4704.50 351.78 409.60 469.32 481.43 4698.63 4702.76 493.57 4701.30 505.74 4700.13 517.93 4699.24 530.14 Slice Geometry and Properties - Critical Failure Surface (circle 1, 40 slices) Slice X -S Base PoreWater Normal Test X -Left Area Angle Width Length Matl Cohesion Phi Weight Force Stress Factor 1 307.42 6.68 26.9 5.45 6.11 1 50.00 25.0 668.14 0.00 103.35 1.03 2 312.87 20.05 26.9 5.45 6.11 1 50.00 25.0 2004.94 0.00 328.02 1.03 3 318.33 8.28 25.5 1.58 1.75 2 10.00 35.0 832.84 0.00 464.58 0.98 4 319.91 31.12 25.5 4.73 5.24 2 10.00 35.0 3231.87 0.00 604.28 0.98 5 324.64 40.74 25.5 4.73 5.24 2 10.00 35.0 4354.39 0.00 814.75 0.98 6 329.36 60.02 24.2 5.58 6.11 2 10.00 35.0 6532.01 0.00 1043.21 0.98 7 334.94 72.55 24.2 5.58 6.11 2 10.00 35.0 7994.43 0.00 1277.09 0.98 8 340.51 54.24 22.9 3.65 3.96 6 0.00 45.0 5423.94 0.00 1279.44 0.93 9 344.16 62.64 22.9 3.81 4.13 2 10.00 35.0 6974.54 0.00 1642.34 0.97 10 347.97 68.75 22.9 3.81 4.13 2 10.00 35.0 7677.22 0.00 1807.96 0.97 11 351.78 113.42 21.5 5.68 6.11 2 10.00 35.0 12702.51 0.00 2019.71 0.97 12 357.46 121.16 21.5 5.69 6.12 2 10.00 35.0 13670.73 0.00 2168.97 0.97 13 363.15 142.84 20.2 6.61 7.04 2 10.00 35.0 16320.45 0.00 2245.97 0.97 14 369.76 106.35 20.2 4.87 5.19 2 10.00 35.0 12230.29 0.00 2284.10 0.97 15 374.63 127.00 18.9 5.79 6.11 2 10.00 35.0 14605.26 0.00 2310.39 0.97 16 380.41 127.28 18.9 5.79 6.11 2 10.00 35.0 14637.09 0.00 2315.48 0.97 17 386.20 128.10 17.5 5.83 6.11 . 2 10.00 35.0 14731.90 0.00 2327.58 0.97 18 392.03 127.51 17.5 5.83 6.11 2 10.00 35.0 14663.16 0.00 2316.72 0.97 19 0.97 20 0.97 21 0.97 22 0.97 23 0.97 24 0.97 25 0.97 26 0.97 27 0.97 28 0.97 29 0.97 30 0.97 31 0.97 32 0.97 33 0.98 34 0.98 35 0.98 36 0.98 37 0.98 38 0.98 39 0.99 40 0.99 397.86 127.37 16.2 5.87 6.11 2 10.00 35.0 14647.34 0.00 403.73 125.89 16.2 5.87 6.11 2 10.00 35.0 14477.23 0.00 409.60 124.77 14.9 5.91 6.11 2 10.00 35.0 14348.61 0.00 415.51 122.40 14.9 5.91 6.11 2 10.00 35.0 14075.86 0.00 421.42 120.29 13.5 5.94 6.11 2 10.00 35.0 13833.15 0.00 427.36 117.01 13.5 5.94 6.11 2 10.00 35.0 13455.65 0.00 433.31 113.89 12.2 5.98 6.11 2 10.00 35.0 13097.26 0.00 439.28 109.70 12.2 5.98 6.11 2 10.00 35.0 12615.40 0.00 445.26 105.56 10.9 6.00 6.11 2 10.00 35.0 12139.75 0.00 451.26 100.46 10.9 6.00 6.11 2 10.00 35.0 11552.45 0.00 457.27 95.31 9.5 6.03 6.11 2 10.00 35.0 10960.62 0.00 463.30 89.29 9.5 6.03 6.11 2 10.00 35.0 10268.21 0.00 469.32 83.12 8.2 6.05 6.11 2 10.00 35.0 9558.81 0.00 475.38 76.18 8.2 6.05 6.11 2 10.00 35.0 8761.04 0.00 481.43 69.01 6.9 6.07 6.11 2 10.00 35.0 7936.42 0.00 487.50 61.16 6.9 6.07 6.11 2 10.00 35.0 7033.16 0.00 493.57 52.99 5.5 6.09 6.11 2 10.00 35.0 6094.22 0.00 499.65 44.23 5.5 6.09 6.11 2 10.00 35.0 5086.18 0.00 505.74 35.09 4.2 6.10 6.11 2 10.00 35.0 4035.16 0.00 511.83 25.41 4.2 6.10 6.11 2 10.00 35.0 2922.12 0.00 517.93 15.06 2.8 5.95 5.96 2 10.00 35.0 1732.10 0.00 523.88 5.00 2.8 6.26 6.27 2 10.00 35.0 575.56 0.00 2312.64 2285.72 2265.18 2222.06 2184.64 2124.95 2070.27 1994.12 1921.84 1828.79 1738.59 1628.72 1520.17 1393.24 1266.01 1121.88 975.68 814.26 648.74 469.72 287.05 90.52 X -S Area: 3237.92 Path Length: 232.31 X -S Weight: 368462.00 GALENA 7.2 Analysis Results Version: 7.2.3.05 Licensee: J & T Consulting Project: Sweet Valley Pit File: P:\23038 CCWCD J2 Meining Farm\DAMS Permit\112 Permit\Slope Stability\Galena\S.V. Pit-SS7N-Mining-Pseudo Static.gmf Processed: 04 Mar 2024 10:45:07 DATA: Analysis 1 - SS -7N - Mining Slope - Pseudo Static Material Properties (6 materials) Material: 1 (Mohr -Coulomb Isotropic) - Overburden/Clay Cohesion Phi UnitWeight Ru Unsaturated: 50.00 25.0 100.00 Auto Saturated: 50.00 25.0 115.00 Auto Material: 2 (Mohr -Coulomb Isotropic) - Sand and Gravel Cohesion Phi UnitWeight Ru Unsaturated: 10.00 35.0 115.00 Auto Saturated: 10.00 35.0 130.00 Auto Material: 3 (Mohr -Coulomb Isotropic) - Stable Claystone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 120.00 Auto Saturated: 3000.00 0.0 135.00 Auto Material: 4 (Mohr -Coulomb Isotropic) - Stable Siltstone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 117.00 Auto Saturated: 3000.00 0.0 133.00 Auto Material: 5 (Mohr -Coulomb Isotropic) - Stable Sandstone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 115.00 Auto Saturated: 3000.00 0.0 128.00 Auto Material: 6 (Mohr -Coulomb Isotropic) - Slurry Wall Cohesion Phi UnitWeight Ru Unsaturated: 0.00 45.0 100.00 Auto Saturated: 0.00 45.0 110.00 Auto Water Properties Unit weight of water: 62.400 Unit weight of water/medium above ground: 62.400 Material Profiles (6 profiles) Profile: 1 (12 points) Material beneath: 1 - Overburden/Clay 260.00 4758.00 274.00 4757.98 280.30 4756.02 285.75 4754.07 297.25 4755.96 302.42 4758.00 319.91 4757.00 341.16 4756.01 357.46 4756.00 369.76 4752.00 Profile: 2 (2 points) Material beneath: 6 - Slurry Wall 341.16 4756.01 344.16 4756.01 Profile: 3 (2 points) Material beneath: 2 - Sand and Gravel 260.00 4752.00 341.16 4752.00 Profile: 4 (3 points) Material beneath: 2 - Sand and Gravel 344.16 4752.00 369.76 4752.00 529.88 4698.63 Profile: 5 (5 points) Material beneath: 3 - Stable Claystone Bedrock 260.00 4698.71 342.60 4698.71 529.88 4698.63 555.95 4698.69 Profile: 6 (5 points) Material beneath: 5 - Stable Sandstone Bedrock 260.00 4685.69 342.60 4685.69 529.88 4685.69 555.95 4685.69 Slope Surface (15 points) 260.00 4758.00 4754.07 297.25 4755.96 4756.01 357.46 4756.00 4698.69 Phreatic Surface (6 points) 260.00 4698.69 600.00 Failure Surface 274.00 302.42 369.76 4738.00 341.16 4698.69 4757.98 4758.00 4752.00 280.30 319.91 529.88 4738.00 344.16 4756.02 4757.00 4698.63 4754.54 291.85 4756.01 344.16 4698.69 600.00 4685.69 600.00 285.75 4754.54 341.16 4756.01 555.95 4698.69 4698.71 529.88 Initial circular surface for critical search defined by: XL,XR,R Intersects: XL: 302.42 YL: 4758.00 XR: 529.88 YR: Centre: XC: 499.41 YC: 5047.30 Radius: R: Earthquake Force Pseudo -static earthquake (seismic) coefficient: 0.070 Variable Restraints 4698.63 350.00 291.85 344.16 600.00 4698.63 555.95 Parameter descriptor: XL XR R Range of variation: 10.00 10.00 350.00 Trial positions within range: 20 20 50 RESULTS: Analysis 1 - SS -7N - Mining Slope - Pseudo Static Bishop Simplified Method of Analysis - Circular Failure Surface Critical Failure Surface Search using Multiple Circle Generation Techniques Initial failure surface approximation - Factor of Safety: 2.934 Analysis Summary There were: 18251 successful analyses from a total of 20001 trial failure surfaces 1750 analyses terminated due to unacceptable geometry Critical (minimum) Factor of Safety: 2.04 Results Summary - Lowest 99 Factor of Safety circles Circle X -Left Y -Left X -Right Y -Right X -Centre Y -Centre Radius FoS 1 307.42 4757.71 530.14 4698.63 550.12 5223.25 525.00 2.040 <-- Critical Surface 2 307.42 4757.71 529.62 4698.72 549.98 5223.32 525.00 2.041 3 307.42 4757.71 530.14 4698.63 548.24 5216.17 517.86 2.041 4 307.42 4757.71 528.56 4699.07 547.46 5216.58 517.86 2.041 5 306.89 4757.74 530.14 4698.63 549.61 5223.27 525.00 2.042 6 307.42 4757.71 528.04 4699.24 549.01 5223.82 525.00 2.042 7 307.42 4757.71 529.62 4698.72 548.10 5216.25 517.86 2.042 8 307.42 4757.71 530.14 4698.63 546.36 5209.09 510.71 2.042 9 307.42 4757.71 529.09 4698.89 544.02 5202.24 503.57 2.042 10 306.89 4757.74 529.62 4698.72 549.47 5223.34 525.00 2.042 11 307.42 4757.71 528.56 4699.07 545.58 5209.50 510.71 2.042 12 307.42 4757.71 529.09 4698.89 549.66 5223.49 525.00 2.042 13 306.89 4757.74 530.14 4698.63 547.74 5216.19 517.86 2.042 14 307.42 4757.71 528.04 4699.24 547.14 5216.75 517.86 2.042 15 307.42 4757.71 529.62 4698.72 546.22 5209.16 510.71 2.043 16 306.89 4757.74 529.62 4698.72 547.59 5216.26 517.86 2.043 17 307.42 4757.71 527.51 4699.42 548.69 5223.99 525.00 2.043 18 307.42 4757.71 529.62 4698.72 540.57 5187.88 489.29 19 307.42 4757.71 529.09 4698.89 542.14 5195.15 496.43 20 307.42 4757.71 530.14 4698.63 544.48 5202.00 503.57 21 307.42 4757.71 528.56 4699.07 543.70 5202.41 503.57 22 307.42 4757.71 529.09 4698.89 547.78 5216.41 517.86 23 306.89 4757.74 529.09 4698.89 549.15 5223.51 525.00 24 306.89 4757.74 530.14 4698.63 545.86 5209.10 510.71 25 307.42 4757.71 528.04 4699.24 545.26 5209.67 510.71 26 307.42 4757.71 528.56 4699.07 549.33 5223.66 525.00 27 307.42 4757.71 527.51 4699.42 546.81 5216.92 517.86 28 306.89 4757.74 529.62 4698.72 545.72 5209.18 510.71 29 307.42 4757.71 529.62 4698.72 544.33 5202.07 503.57 30 307.42 4757.71 530.67 4698.63 542.57 5194.92 496.43 31 307.42 4757.71 529.09 4698.89 540.25 5188.05 489.29 32 306.89 4757.74 529.09 4698.89 547.27 5216.43 517.86 33 307.42 4757.71 529.62 4698.72 538.68 5180.78 482.14 34 307.42 4757.71 526.99 4699.59 548.36 5224.16 525.00 35 307.42 4757.71 528.56 4699.07 541.82 5195.32 496.43 36 307.42 4757.71 529.09 4698.89 545.90 5209.33 510.71 37 307.42 4757.71 530.14 4698.63 542.60 5194.90 496.43 38 306.89 4757.74 530.14 4698.63 543.98 5202.01 503.57 39 307.42 4757.71 528.04 4699.24 543.38 5202.58 503.57 40 306.89 4757.74 528.56 4699.07 548.83 5223.68 525.00 41 307.42 4757.71 527.51 4699.42 544.94 5209.84 510.71 42 306.89 4757.74 529.62 4698.72 543.84 5202.09 503.57 43 307.42 4757.71 530.14 4698.63 536.94 5173.58 475.00 44 307.42 4757.71 526.99 4699.59 546.49 5217.08 517.86 45 306.89 4757.74 529.09 4698.89 545.40 5209.35 510.71 46 307.42 4757.71 529.62 4698.72 542.45 5194.98 496.43 47 307.42 4757.71 528.56 4699.07 539.94 5188.22 489.29 48 307.42 4757.71 529.09 4698.89 538.37 5180.95 482.14 49 307.42 4757.71 530.67 4698.63 540.69 5187.81 489.29 50 306.89 4757.74 528.56 4699.07 546.95 5216.60 517.86 51 306.89 4757.74 530.14 4698.63 542.10 5194.92 496.43 52 307.42 4757.71 528.04 4699.24 541.50 5195.49 496.43 53 307.42 4757.71 526.46 4699.77 548.04 5224.33 525.00 54 306.89 4757.74 530.67 4698.63 542.08 5194.93 496.43 55 307.42 4757.71 529.62 4698.72 536.79 5173.66 475.00 56 307.42 4757.71 530.14 4698.63 540.71 5187.80 489.29 57 306.37 4757.77 530.14 4698.63 549.11 5223.29 525.00 58 307.42 4757.71 527.51 4699.42 543.06 5202.75 503.57 59 306.89 4757.74 528.04 4699.24 548.50 5223.84 525.00 60 307.42 4757.71 526.99 4699.59 544.62 5210.00 510.71 61 306.89 4757.74 529.62 4698.72 541.96 5194.99 496.43 62 306.89 4757.74 529.09 4698.89 543.52 5202.26 503.57 2.043 2.043 2.043 2.043 2.043 2.043 2.043 2.043 2.044 2.044 2.044 2.044 2.044 2.044 2.044 2.044 2.044 2.044 2.044 2.044 2.044 2.044 2.044 2.044 2.045 2.045 2.045 2.045 2.045 2.045 2.045 2.045 2.045 2.045 2.045 2.045 2.045 2.045 2.045 2.045 2.045 2.045 2.045 2.045 2.046 63 306.37 4757.77 529.62 4698.72 548.97 5223.36 525.00 2.046 64 307.42 4757.71 526.46 4699.77 546.17 5217.25 517.86 2.046 65 306.89 4757.74 528.56 4699.07 545.08 5209.52 510.71 2.046 66 307.42 4757.71 530.14 4698.63 535.05 5166.46 467.86 2.046 67 306.37 4757.77 530.14 4698.63 547.23 5216.21 517.86 2.046 68 307.42 4757.71 528.56 4699.07 538.05 5181.12 482.14 2.046 69 307.42 4757.71 528.04 4699.24 539.62 5188.39 489.29 2.046 70 306.89 4757.74 530.14 4698.63 540.22 5187.81 489.29 2.046 71 306.89 4757.74 530.67 4698.63 540.20 5187.82 489.29 2.046 72 306.89 4757.74 528.04 4699.24 546.63 5216.77 517.86 2.046 73 307.42 4757.71 527.51 4699.42 541.18 5195.66 496.43 2.046 74 307.42 4757.71 529.09 4698.89 536.48 5173.84 475.00 2.046 75 307.42 4757.71 530.67 4698.63 538.81 5180.71 482.14 2.046 76 307.42 4757.71 525.93 4699.95 547.72 5224.49 525.00 2.046 77 307.42 4757.71 526.99 4699.59 542.74 5202.92 503.57 2.046 78 307.42 4757.71 529.62 4698.72 534.90 5166.54 467.86 2.046 79 307.42 4757.71 530.14 4698.63 538.83 5180.69 482.14 2.046 80 306.37 4757.77 529.62 4698.72 547.09 5216.28 517.86 2.046 81 306.89 4757.74 527.51 4699.42 548.18 5224.01 525.00 2.046 82 306.89 4757.74 529.62 4698.72 540.08 5187.89 489.29 2.046 83 306.89 4757.74 529.09 4698.89 541.64 5195.16 496.43 2.046 84 307.42 4757.71 526.46 4699.77 544.30 5210.17 510.71 2.047 85 306.89 4757.74 528.56 4699.07 543.20 5202.43 503.57 2.047 86 306.37 4757.77 529.09 4698.89 548.64 5223.53 525.00 2.047 87 306.37 4757.77 530.14 4698.63 545.36 5209.12 510.71 2.047 88 306.89 4757.74 528.04 4699.24 544.76 5209.68 510.71 2.047 89 307.42 4757.71 525.93 4699.95 545.85 5217.42 517.86 2.047 90 307.42 4757.71 528.04 4699.24 537.74 5181.29 482.14 2.047 91 307.42 4757.71 527.51 4699.42 539.30 5188.56 489.29 2.047 92 306.89 4757.74 530.14 4698.63 538.34 5180.70 482.14 2.047 93 307.42 4757.71 528.56 4699.07 536.17 5174.01 475.00 2.047 94 306.89 4757.74 530.67 4698.63 538.32 5180.71 482.14 2.047 95 307.42 4757.71 526.99 4699.59 540.87 5195.83 496.43 2.047 96 306.89 4757.74 527.51 4699.42 546.31 5216.94 517.86 2.047 97 306.37 4757.77 529.62 4698.72 545.22 5209.19 510.71 2.047 98 307.42 4757.71 530.14 4698.63 533.16 5159.33 460.71 2.047 99 307.42 4757.71 530.67 4698.63 533.15 5159.34 460.71 2.047 Critical Failure Surface (circle 1) Intersects: XL: 307.42 YL: 4757.71 XR: 530.14 YR: 4698.63 Centre: XC: 550.12 YC: 5223.25 Radius: R: 525.00 Generated failure surface: (20 points) 307.42 4757.71 318.33 4752.19 329.36 4746.92 340.51 4741.91 351.78 4737.16 363.15 4732.67 374.63 4728.45 386.20 4724.50 397.86 4720.81 409.60 4717.40 421.42 4714.27 433.31 4711.41 445.26 4708.83 457.27 4706.53 469.32 4704.50 481.43 4702.76 493.57 4701.30 505.74 4700.13 517.93 4699.24 530.14 4698.63 Slice Geometry and Properties - Critical Failure Surface (circle 1, 40 slices) Slice X -S Base PoreWater Normal Test X -Left Area Angle Width Length Matl Cohesion Phi Weight Force Stress Factor 1 307.42 6.68 26.9 5.45 6.11 1 50.00 25.0 668.14 0.00 98.67 1.00 2 312.87 20.05 26.9 5.45 6.11 1 50.00 25.0 2004.94 0.00 318.35 1.00 3 318.33 8.28 25.5 1.58 1.75 2 10.00 35.0 832.84 0.00 450.14 0.95 4 319.91 31.12 25.5 4.73 5.24 2 10.00 35.0 3231.87 0.00 585.62 0.95 5 324.64 40.74 25.5 4.73 5.24 2 10.00 35.0 4354.39 0.00 789.75 0.95 6 329.36 60.02 24.2 5.58 6.11 2 10.00 35.0 6532.01 0.00 1012.95 0.95 7 334.94 72.55 24.2 5.58 6.11 2 10.00 35.0 7994.43 0.00 1240.13 0.95 8 340.51 54.24 22.9 3.65 3.96 6 0.00 45.0 5423.94 0.00 1232.51 0.90 9 344.16 62.64 22.9 3.81 4.13 2 10.00 35.0 6974.54 0.00 1597.49 0.95 10 347.97 68.75 22.9 3.81 4.13 2 10.00 35.0 7677.22 0.00 1758.62 0.95 11 351.78 113.42 21.5 5.68 6.11 2 10.00 35.0 12702.51 0.00 1967.77 0.95 12 357.46 121.16 21.5 5.69 6.12 2 10.00 35.0 13670.73 0.00 2113.21 0.95 13 363.15 142.84 20.2 6.61 7.04 2 10.00 35.0 16320.45 0.00 2191.72 0.95 14 369.76 106.35 20.2 4.87 5.19 2 10.00 35.0 12230.29 0.00 2228.92 0.95 15 374.63 127.00 18.9 5.79 6.11 2 10.00 35.0 14605.26 0.00 2258.15 0.95 16 380.41 127.28 18.9 5.79 6.11 2 10.00 35.0 14637.09 0.00 2263.13 0.95 17 0.95 18 0.95 19 0.95 20 0.95 21 0.95 22 0.95 23 0.95 24 0.95 25 0.95 26 0.95 27 0.96 28 0.96 29 0.96 30 0.96 31 0.96 32 0.96 33 0.97 34 0.97 35 0.97 36 0.97 37 0.98 38 0.98 386.20 392.03 397.86 403.73 409.60 415.51 421.42 427.36 433.31 439.28 445.26 451.26 457.27 463.30 469.32 475.38 481.43 487.50 493.57 499.65 505.74 511.83 128.10 127.51 127.37 125.89 124.77 122.40 120.29 117.01 113.89 109.70 105.56 100.46 95.31 89.29 83.12 76.18 69.01 61.16 52.99 44.23 35.09 25.41 17.5 5.83 17.5 5.83 16.2 16.2 14.9 14.9 13.5 13.5 12.2 12.2 10.9 10.9 9.5 9.5 8.2 8.2 6.9 6.9 5.5 5.5 4.2 4.2 5.87 5.87 5.91 5.91 5.94 5.94 5.98 5.98 6.00 6.00 6.03 6.03 6.05 6.05 6.07 6.07 6.09 6.09 6.10 6.10 6.11 2 10.00 35.0 14731.90 6.11 2 10.00 35.0 14663.16 6.11 2 10.00 35.0 14647.34 6.11 2 10.00 35.0 14477.23 6.11 2 10.00 35.0 14348.61 6.11 2 10.00 35.0 14075.86 6.11 2 10.00 35.0 13833.15 6.11 2 10.00 35.0 13455.65 6.11 2 10.00 35.0 13097.26 6.11 2 10.00 35.0 12615.40 6.11 2 10.00 35.0 12139.75 6.11 2 10.00 35.0 11552.45 6.11 2 10.00 35.0 10960.62 6.11 2 10.00 35.0 10268.21 6.11 2 10.00 35.0 9558.81 6.11 2 10.00 35.0 8761.04 6.11 2 10.00 35.0 7936.42 6.11 2 10.00 35.0 7033.16 6.11 2 10.00 35.0 6094.22 6.11 2 10.00 35.0 5086.18 6.11 2 10.00 35.0 4035.16 6.11 2 10.00 35.0 2922.12 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 2278.55 2267.91 2267.48 2241.07 2224.45 2182.08 2148.74 2090.02 2039.46 1964.44 1896.25 1804.42 1718.15 1609.57 1504.71 1379.07 1255.15 1112.24 968.88 808.57 645.26 467.18 39 0.98 40 0.98 517.93 15.06 2.8 5.95 5.96 2 10.00 35.0 1732.10 523.88 5.00 2.8 6.26 6.27 2 10.00 35.0 575.56 X -S Area: 3237.92 Path Length: 232.31 X -S Weight: 368462.00 0.00 285.97 0.00 90.14 GALENA 7.2 Analysis Results Version: 7.2.3.05 Licensee: J & T Consulting Project: Sweet Valley Pit File: P:\23038 CCWCD J2 Meining Farm\DRMS Permit\112 Permit\Slope Stability\Galena\S.V. Pit-SS7S-Mining.gmf Processed: 04 Mar 2024 09:57:26 DATA: Analysis 1 - SS -7S - Mining Slope - Static Material Properties (6 materials) Material: 1 (Mohr -Coulomb Isotropic) - Overburden/Clay Cohesion Phi UnitWeight Ru Unsaturated: 50.00 25.0 100.00 Auto Saturated: 50.00 25.0 115.00 Auto Material: 2 (Mohr -Coulomb Isotropic) - Sand and Gravel Unsaturated: Saturated: Cohesion 10.00 10.00 Material: 3 (Mohr -Coulomb Cohesion Phi UnitWeight Unsaturated: 3000.00 0.0 120.00 Saturated: 3000.00 0.0 135.00 Material: 4 (Mohr -Coulomb Isotropic) - Stable Cohesion Phi UnitWeight Unsaturated: 3000.00 0.0 117.00 Saturated: 3000.00 0.0 133.00 Material: 5 (Mohr -Coulomb Isotropic) - Stable Cohesion Phi UnitWeight Unsaturated: 3000.00 0.0 115.00 Saturated: 3000.00 0.0 128.00 Material: 6 (Mohr -Coulomb Isotropic) - Slurry Cohesion Phi UnitWeight Unsaturated: 0.00 45.0 100.00 Saturated: 0.00 45.0 110.00 Phi UnitWeight Ru 35.0 115.00 Auto 35.0 130.00 Auto Isotropic) - Stable Water Properties Unit weight of water: 62.400 Material Profiles (5 profiles) Profile: 1 (12 points) Material beneath: 1 - Overburden/Clay Claystone Ru Auto Auto Siltstone Ru Auto Auto Sandstone Ru Auto Auto Wall Ru Auto Auto Bedrock Bedrock Bedrock Unit weight of water/medium above ground: 62.400 176.28 4752.00 190.05 4756.72 203.03 4756.71 206.03 4756.71 235.88 4756.69 260.00 4758.00 274.00 4757.98 280.30 4756.02 285.75 4754.54 291.85 4754.07 297.25 4755.96 319.91 4757.00 Profile: 2 (2 points) Material beneath: 6 - Slurry Wall 203.03 4756.71 206.03 4756.71 Profile: 3 (3 points) Material beneath: 2 - Sand and Gravel 17.19 4698.97 176.28 4752.00 203.03 4752.00 Profile: 4 (2 points) Material beneath: 2 - Sand and Gravel 206.03 4752.00 319.91 4752.00 Profile: 5 (4 points) Material beneath: 4 - Stable Siltstone Bedrock 0.00 4698.97 17.19 4698.97 204.50 4698.95 319.91 4698.95 Slope Surface (14 points) 0.00 4698.97 17.19 4698.97 176.28 4752.00 190.05 4756.72 203.03 4756.71 206.03 4756.71 235.88 4756.69 260.00 4758.00 274.00 4757.98 280.30 4756.02 285.75 4754.54 291.85 4754.07 297.25 4755.96 319.91 4757.00 Phreatic Surface (5 points) 0.00 4698.97 17.19 4698.97 203.03 4698.97 206.03 4731.50 319.91 4731.50 Failure Surface Initial circular surface for critical search defined by: XL,XR,R Intersects: XL: 17.19 YL: 4698.97 XR: 274.00 YR: Centre: XC: 61.02 YC: 5096.56 Radius: R: Variable Restraints Parameter descriptor: XL XR R Range of variation: 10.00 10.00 350.00 Trial positions within range: 20 20 50 RESULTS: Analysis 1 - SS -7S - Mining Slope - Static Bishop Simplified Method of Analysis - Circular Failure Surface 4757.98 400.00 Critical Failure Surface Search using Multiple Circle Generation Techniques Initial failure surface approximation - Factor of Safety: 4.022 Analysis Summary There were: 19745 successful analyses from a total of 20001 trial failure surfaces 256 analyses terminated due to unacceptable geometry Critical (minimum) Factor of Safety: 2.96 Results Summary - Lowest 99 Factor of Safety circles Circle X -Left Y -Left X -Right Y -Right X -Centre Y -Centre Radius FoS 1 16.40 4698.97 269.00 4757.99 15.25 5273.97 575.00 2.957 <-- Critical Surface 2 16.93 4698.97 269.00 4757.99 15.25 5273.97 575.00 2.958 3 16.40 4698.97 269.00 4757.99 16.92 5266.83 567.86 2.958 4 16.93 4698.97 269.00 4757.99 16.92 5266.83 567.86 2.959 5 16.40 4698.97 269.00 4757.99 18.59 5259.68 560.71 2.960 6 17.45 4699.06 269.00 4757.99 15.43 5274.05 575.00 2.960 7 16.93 4698.97 269.00 4757.99 18.59 5259.68 560.71 2.960 8 16.40 4698.97 269.00 4757.99 20.26 5252.53 553.57 2.961 9 17.45 4699.06 269.00 4757.99 17.10 5266.92 567.86 2.961 10 16.93 4698.97 269.00 4757.99 20.27 5252.53 553.57 2.962 11 16.40 4698.97 269.00 4757.99 21.93 5245.37 546.43 2.962 12 17.45 4699.06 269.00 4757.99 18.77 5259.77 560.71 2.963 13 16.93 4698.97 269.00 4757.99 21.94 5245.38 546.43 2.963 14 17.98 4699.23 269.00 4757.99 15.78 5274.23 575.00 2.964 15 17.45 4699.06 269.00 4757.99 20.45 5252.62 553.57 2.964 16 16.93 4698.97 269.00 4757.99 23.62 5238.21 539.29 2.965 17 17.98 4699.23 269.00 4757.99 17.45 5267.09 567.86 2.965 18 17.45 4699.06 269.00 4757.99 22.12 5245.47 546.43 2.965 19 16.40 4698.97 269.53 4757.99 15.78 5273.97 575.00 2.966 20 17.45 4699.06 269.00 4757.99 23.80 5238.31 539.29 2.966 21 17.98 4699.23 269.00 4757.99 19.13 5259.95 560.71 2.967 22 16.93 4698.97 269.53 4757.99 15.78 5273.97 575.00 2.967 23 17.45 4699.06 269.00 4757.99 25.48 5231.14 532.14 2.967 24 17.98 4699.23 269.00 4757.99 20.80 5252.80 553.57 2.967 25 18.51 4699.41 269.00 4757.99 16.14 5274.40 575.00 2.968 26 16.40 4698.97 269.53 4757.99 17.45 5266.83 567.86 2.968 27 16.93 4698.97 269.53 4757.99 17.45 5266.83 567.86 2.968 28 17.45 4699.06 269.53 4757.99 15.96 5274.06 575.00 2.968 29 17.98 4699.23 269.00 4757.99 22.47 5245.64 546.43 2.968 30 17.45 4699.06 269.00 4757.99 27.16 5223.97 525.00 2.969 31 18.51 4699.41 269.00 4757.99 17.81 5267.27 567.86 2.969 32 16.40 4698.97 269.53 4757.99 19.11 5259.68 560.71 2.969 33 16.93 4698.97 269.53 4757.99 19.12 5259.68 560.71 2.969 34 17.45 4699.06 269.53 4757.99 17.63 5266.92 567.86 2.969 35 16.40 4698.97 269.53 4757.99 20.78 5252.52 553.57 2.969 36 17.98 4699.23 269.00 4757.99 24.15 5238.48 539.29 2.969 37 18.51 4699.41 269.00 4757.99 19.48 5260.12 560.71 2.970 38 16.93 4698.97 269.53 4757.99 20.79 5252.53 553.57 2.970 39 17.45 4699.06 269.53 4757.99 19.30 5259.77 560.71 2.970 40 16.40 4698.97 269.53 4757.99 22.45 5245.37 546.43 2.970 41 16.93 4698.97 269.53 4757.99 22.46 5245.37 546.43 2.970 42 17.98 4699.23 269.00 4757.99 25.83 5231.32 532.14 2.970 43 19.03 4699.58 269.00 4757.99 16.50 5274.58 575.00 2.971 44 18.51 4699.41 269.00 4757.99 21.15 5252.97 553.57 2.971 45 17.45 4699.06 269.53 4757.99 20.97 5252.62 553.57 2.971 46 17.98 4699.23 269.53 4757.99 16.31 5274.23 575.00 2.971 47 18.51 4699.41 269.00 4757.99 22.82 5245.82 546.43 2.972 48 19.03 4699.58 269.00 4757.99 18.16 5267.44 567.86 2.972 49 17.98 4699.23 269.00 4757.99 27.50 5224.15 525.00 2.972 50 17.45 4699.06 269.53 4757.99 22.64 5245.46 546.43 2.972 51 17.98 4699.23 269.53 4757.99 17.98 5267.09 567.86 2.972 52 18.51 4699.41 269.00 4757.99 24.50 5238.66 539.29 2.973 53 19.03 4699.58 269.00 4757.99 19.83 5260.30 560.71 2.973 54 17.98 4699.23 269.00 4757.99 29.18 5216.97 517.86 2.973 55 17.45 4699.06 269.53 4757.99 24.32 5238.30 539.29 2.973 56 17.98 4699.23 269.53 4757.99 19.65 5259.95 560.71 2.973 57 19.56 4699.76 269.00 4757.99 16.85 5274.75 575.00 2.974 58 16.93 4698.97 270.05 4757.99 16.31 5273.97 575.00 2.974 59 16.40 4698.97 270.05 4757.99 16.31 5273.97 575.00 2.974 60 18.51 4699.41 269.00 4757.99 26.17 5231.50 532.14 2.974 61 19.03 4699.58 269.00 4757.99 21.50 5253.15 553.57 2.974 62 17.98 4699.23 269.00 4757.99 30.87 5209.79 510.71 2.974 63 17.45 4699.06 269.53 4757.99 25.99 5231.13 532.14 2.974 64 17.98 4699.23 269.53 4757.99 21.32 5252.79 553.57 2.974 65 16.40 4698.97 270.05 4757.99 17.97 5266.83 567.86 2.974 66 18.51 4699.41 269.53 4757.99 16.67 5274.41 575.00 2.974 67 16.93 4698.97 270.05 4757.99 17.98 5266.83 567.86 2.974 68 19.56 4699.76 269.00 4757.99 18.52 5267.62 567.86 2.975 69 19.03 4699.58 269.00 4757.99 23.17 5246.00 546.43 2.975 70 18.51 4699.41 269.00 4757.99 27.85 5224.33 525.00 2.975 71 17.45 4699.06 270.05 4757.99 16.49 5274.06 575.00 2.975 72 17.45 4699.06 269.53 4757.99 27.67 5223.96 525.00 2.975 73 17.98 4699.23 269.53 4757.99 22.99 5245.64 546.43 2.975 74 17.98 4699.23 269.00 4757.99 32.55 5202.59 503.57 2.975 75 16.40 4698.97 270.05 4757.99 19.64 5259.68 560.71 2.975 76 16.93 4698.97 270.05 4757.99 19.64 5259.68 560.71 2.975 77 18.51 4699.41 269.53 4757.99 18.34 5267.27 567.86 2.975 78 19.56 4699.76 269.00 4757.99 20.19 5260.47 560.71 2.976 79 19.03 4699.58 269.00 4757.99 24.85 5238.84 539.29 2.976 80 18.51 4699.41 269.00 4757.99 29.53 5217.15 517.86 2.976 81 17.45 4699.06 270.05 4757.99 18.15 5266.92 567.86 2.976 82 16.40 4698.97 270.05 4757.99 21.30 5252.52 553.57 2.976 83 17.98 4699.23 269.53 4757.99 24.66 5238.48 539.29 2.976 84 16.93 4698.97 270.05 4757.99 21.31 5252.52 553.57 2.976 85 18.51 4699.41 269.53 4757.99 20.00 5260.12 560.71 2.976 86 17.98 4699.23 269.00 4757.99 34.23 5195.40 496.43 2.976 87 20.08 4699.94 269.00 4757.99 17.21 5274.93 575.00 2.977 88 19.56 4699.76 269.00 4757.99 21.86 5253.33 553.57 2.977 89 19.03 4699.58 269.00 4757.99 26.52 5231.67 532.14 2.977 90 17.45 4699.06 270.05 4757.99 19.82 5259.77 560.71 2.977 91 16.40 4698.97 270.05 4757.99 22.97 5245.36 546.43 2.977 92 18.51 4699.41 269.00 4757.99 31.21 5209.96 510.71 2.977 93 16.93 4698.97 270.05 4757.99 22.98 5245.37 546.43 2.977 94 17.98 4699.23 269.53 4757.99 26.34 5231.31 532.14 2.977 95 18.51 4699.41 269.53 4757.99 21.67 5252.97 553.57 2.977 96 19.03 4699.58 269.53 4757.99 17.03 5274.58 575.00 2.977 97 20.08 4699.94 269.00 4757.99 18.88 5267.79 567.86 2.978 98 19.56 4699.76 269.00 4757.99 23.52 5246.17 546.43 2.978 99 17.45 4699.06 270.05 4757.99 21.49 5252.61 553.57 2.978 Critical Failure Surface (circle 1) Intersects: XL: 16.40 YL: 4698.97 XR: 269.00 YR: 4757.99 Centre: XC: 15.25 YC: 5273.97 Radius: R: 575.00 Generated failure surface: (20 points) 16.40 4698.97 30.17 4699.16 43.93 4699.69 57.68 4700.54 4701.72 85.08 4703.23 98.73 4705.06 112.33 4707.22 125.88 4709.71 4712.52 152.77 4715.66 166.10 4719.11 179.34 4722.88 192.49 4726.97 4731.37 218.48 4736.08 231.30 4741.10 244.00 4746.43 256.57 4752.06 4757.99 Slice Geometry and Properties - Critical Failure Surface (circle 1, 42 slices) Slice Test X -S Base 71.40 139.36 205.54 269.00 PoreWater Normal Factor 1 1.00 2 1.00 3 0.99 4 0.99 5 0.99 6 0.99 7 0.98 8 0.98 9 0.98 10 0.98 11 0.98 12 0.98 13 0.98 14 0.98 15 0.97 16 0.97 17 0.97 18 0.97 19 0.97 20 0.97 21 0.97 X -Left Area Angle Width Length Matl Cohesion Phi Weight Force Stress 16.40 5.76 0.8 6.88 6.89 2 10.00 35.0 661.87 0.00 95.77 23.29 20.90 0.8 6.88 6.89 2 10.00 35.0 2403.14 0.00 347.84 30.17 35.44 2.2 6.88 6.89 2 10.00 35.0 4075.69 0.00 586.95 37.05 49.42 2.2 6.88 6.89 2 10.00 35.0 5683.33 0.00 818.51 43.93 62.75 3.5 6.87 6.89 2 10.00 35.0 7216.65 0.00 1034.72 50.80 75.57 3.5 6.87 6.89 2 10.00 35.0 8690.78 0.00 1246.12 57.68 87.65 4.9 6.86 6.89 2 10.00 35.0 10080.06 0.00 1439.79 64.54 99.29 4.9 6.86 6.89 2 10.00 35.0 11418.28 0.00 1630.94 71.40 110.09 6.3 6.84 6.89 2 10.00 35.0 12660.30 0.00 1802.41 78.24 120.54 6.3 6.84 6.89 2 10.00 35.0 13862.42 0.00 1973.59 85.08 130.03 7.7 6.82 6.89 2 10.00 35.0 14953.00 0.00 2123.15 91.91 139.29 7.7 6.82 6.89 2 10.00 35.0 16017.87 0.00 2274.38 98.73 147.44 9.0 6.80 6.89 2 10.00 35.0 16955.62 0.00 2402.47 105.53 155.50 9.0 6.80 6.89 2 10.00 35.0 17882.73 0.00 2533.86 112.33 162.31 10.4 6.77 6.89 2 10.00 35.0 18665.90 0.00 2640.78 119.10 169.18 10.4 6.77 6.89 2 10.00 35.0 19455.74 0.00 2752.55 125.88 174.64 11.8 6.74 6.89 2 10.00 35.0 20083.34 0.00 2838.66 132.62 180.31 11.8 6.74 6.89 2 10.00 35.0 20735.49 0.00 2930.81 139.36 184.41 13.2 6.70 6.89 2 10.00 35.0 21207.66 0.00 2996.45 146.06 188.89 13.1 6.70 6.89 2 10.00 35.0 21722.65 0.00 3069.29 152.77 191.67 14.5 6.67 6.89 2 10.00 35.0 22041.49 0.00 3114.88 22 159.43 194.97 14.5 6.67 6.89 2 10.00 35.0 22421.01 0.00 3168.53 0.97 23 166.10 150.80 15.9 5.09 5.29 2 10.00 35.0 17341.63 0.00 3190.39 0.97 24 171.19 152.05 15.9 5.09 5.29 2 10.00 35.0 17486.28 0.00 3217.00 0.97 25 176.28 92.13 15.9 3.06 3.18 2 10.00 35.0 10571.38 0.00 3232.55 0.97 26 179.34 161.97 17.3 5.35 5.61 2 10.00 35.0 18469.03 0.00 3212.37 0.98 27 184.70 162.89 17.3 5.35 5.61 2 10.00 35.0 18427.15 0.00 3205.02 0.98 28 190.05 73.62 17.3 2.44 2.56 2 10.00 35.0 8293.02 0.00 3160.68 0.98 29 192.49 152.04 18.6 5.27 5.56 2 10.00 35.0 17112.46 0.00 3006.87 0.98 30 197.76 142.66 18.6 5.27 5.56 2 10.00 35.0 16033.65 0.00 2817.17 0.98 31 203.03 64.72 18.6 2.51 2.65 6 0.00 45.0 6471.75 0.00 2312.69 0.95 32 205.54 156.31 20.0 6.47 6.89 2 10.00 35.0 17519.16 0.00 2491.72 0.98 33 212.01 141.04 20.0 6.47 6.89 2 10.00 35.0 15763.43 0.00 2241.93 0.98 34 218.48 124.14 21.4 6.41 6.89 2 10.00 35.0 13824.26 0.00 1971.99 0.98 35 224.89 108.02 21.4 6.41 6.89 2 10.00 35.0 11970.57 0.00 1707.40 0.98 36 231.30 66.94 22.8 4.58 4.96 2 10.00 35.0 7375.76 0.00 1465.01 0.99 37 235.88 98.98 22.8 8.12 8.81 2 10.00 35.0 10783.94 0.00 1206.33 0.99 38 244.00 58.93 24.1 6.22 6.81 2 10.00 35.0 6282.76 0.00 912.16 0.99 39 250.22 43.71 24.1 6.22 6.81 2 10.00 35.0 4501.28 0.00 653.13 0.99 40 256.44 18.01 25.5 3.56 3.94 1 50.00 25.0 1801.18 0.00 463.01 1.03 41 260.00 14.53 25.5 4.50 4.99 1 50.00 25.0 1452.99 0.00 292.82 1.03 42 264.50 4.84 25.5 4.50 4.99 1 50.00 25.0 484.30 0.00 92.59 1.03 X -S Area: 4674.39 Path Length: 261.65 X -S Weight: 530861.00 GALENA 7.2 Analysis Results Version: 7.2.3.05 Licensee: J & T Consulting Project: Sweet Valley Pit File: P:\23038 CCWCD J2 Meining Farm\DBMS Permit\112 Permit\Slope Stability\Galena\S.V. Pit-SS7S-Mining-Pseudo Static.gmf Processed: 04 Mar 2024 10:03:00 DATA: Analysis 1 - SS -7S - Mining Slope - Pseudo Static Material Properties (6 materials) Material: 1 (Mohr -Coulomb Isotropic) - Overburden/Clay Cohesion Phi UnitWeight Ru Unsaturated: 50.00 25.0 100.00 Auto Saturated: 50.00 25.0 115.00 Auto Material: 2 (Mohr -Coulomb Isotropic) - Sand and Gravel Cohesion Phi UnitWeight Ru Unsaturated: 10.00 35.0 115.00 Auto Saturated: 10.00 35.0 130.00 Auto Material: 3 (Mohr -Coulomb Isotropic) - Stable Claystone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 120.00 Auto Saturated: 3000.00 0.0 135.00 Auto Material: 4 (Mohr -Coulomb Isotropic) - Stable Siltstone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 117.00 Auto Saturated: 3000.00 0.0 133.00 Auto Material: 5 (Mohr -Coulomb Isotropic) - Stable Sandstone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 115.00 Auto Saturated: 3000.00 0.0 128.00 Auto Material: 6 (Mohr -Coulomb Isotropic) - Slurry Wall Cohesion Phi UnitWeight Ru Unsaturated: 0.00 45.0 100.00 Auto Saturated: 0.00 45.0 110.00 Auto Water Properties Unit weight of water: 62.400 Unit weight of water/medium above ground: 62.400 Material Profiles (5 profiles) Profile: 1 (12 points) 176.28 4752.00 4756.69 260.00 4758.00 4754.07 297.25 4755.96 Profile: 2 (2 points) 203.03 4756.71 Profile: 3 (3 points) 17.19 4698.97 Profile: 4 (2 points) 206.03 4752.00 Profile: 5 (4 points) 0.00 4698.97 Slope Surface (14 points) 0.00 4698.97 4756.71 206.03 4756.71 4756.02 285.75 4754.54 Material beneath: 1 - Overburden/Clay 190.05 4756.72 203.03 274.00 4757.98 4756.71 280.30 4756.02 319.91 4757.00 Material beneath: 6 - Slurry Wall 206.03 4756.71 Material beneath: 2 - Sand and Gravel 176.28 4752.00 203.03 4752.00 Material beneath: 2 - Sand and Gravel 319.91 4752.00 Material beneath: 4 - Stable Siltstone Bedrock 17.19 4698.97 204.50 4698.95 Phreatic Surface (5 points) 0.00 4731.50 Failure Surface 4698.97 17.19 235.88 291.85 4698.97 4756.69 4754.07 17.19 4698.97 176.28 260.00 297.25 4752.00 4758.00 4755.96 203.03 4698.97 Initial circular surface for critical search defined by: XL,XR,R XL: 17.19 YL: 4698.97 XR: 274.00 YR: XC: 61.02 YC: 5096.56 Radius: R: Intersects: Centre: Earthquake Force Pseudo -static earthquake (seismic) coefficient: 0.070 Variable Restraints Parameter descriptor: XL Range of variation: 10.00 Trial positions within range: 20 XR 10.00 20 R 350.00 50 206.03 4756.71 235.88 285.75 4754.54 319.91 4698.95 190.05 4756.72 274.00 4757.98 319.91 4757.00 206.03 4731.50 4757.98 400.00 291.85 203.03 280.30 319.91 RESULTS: Analysis 1 - SS -7S - Mining Slope - Pseudo Static Bishop Simplified Method of Analysis - Circular Failure Surface Critical Failure Surface Search using Multiple Circle Generation Techniques Initial failure surface approximation - Factor of Safety: 3.096 Analysis Summary There were: 19745 successful analyses from a total of 20001 trial failure surfaces 256 analyses terminated due to unacceptable geometry Critical (minimum) Factor of Safety: 2.27 Results Summary - Lowest 99 Factor of Safety circles Circle X -Left Y -Left X -Right Y -Right X -Centre Y -Centre Radius FoS 1 16.40 4698.97 269.00 4757.99 15.25 5273.97 575.00 2.267 <-- Critical Surface 2 16.93 4698.97 269.00 4757.99 15.25 5273.97 575.00 2.267 3 16.40 4698.97 269.00 4757.99 16.92 5266.83 567.86 2.268 4 16.93 4698.97 269.00 4757.99 16.92 5266.83 567.86 2.268 5 17.45 4699.06 269.00 4757.99 15.43 5274.05 575.00 2.269 6 16.40 4698.97 269.00 4757.99 18.59 5259.68 560.71 2.269 7 16.93 4698.97 269.00 4757.99 18.59 5259.68 560.71 2.270 8 17.45 4699.06 269.00 4757.99 17.10 5266.92 567.86 2.270 9 16.40 4698.97 269.00 4757.99 20.26 5252.53 553.57 2.270 10 16.93 4698.97 269.00 4757.99 20.27 5252.53 553.57 2.271 11 17.98 4699.23 269.00 4757.99 15.78 5274.23 575.00 2.271 12 17.45 4699.06 269.00 4757.99 18.77 5259.77 560.71 2.271 13 16.40 4698.97 269.00 4757.99 21.93 5245.37 546.43 2.271 14 16.93 4698.97 269.00 4757.99 21.94 5245.38 546.43 2.272 15 17.98 4699.23 269.00 4757.99 17.45 5267.09 567.86 2.272 16 17.45 4699.06 269.00 4757.99 20.45 5252.62 553.57 2.272 17 16.40 4698.97 269.53 4757.99 15.78 5273.97 575.00 2.273 18 16.93 4698.97 269.53 4757.99 15.78 5273.97 575.00 2.273 19 16.93 4698.97 269.00 4757.99 23.62 5238.21 539.29 2.273 20 18.51 4699.41 269.00 4757.99 16.14 5274.40 575.00 2.273 21 17.98 4699.23 269.00 4757.99 19.13 5259.95 560.71 2.273 22 17.45 4699.06 269.00 4757.99 22.12 5245.47 546.43 2.273 23 16.40 4698.97 269.53 4757.99 17.45 5266.83 567.86 2.274 24 17.45 4699.06 269.53 4757.99 15.96 5274.06 575.00 2.274 25 16.93 4698.97 269.53 4757.99 17.45 5266.83 567.86 2.274 26 18.51 4699.41 269.00 4757.99 17.81 5267.27 567.86 2.274 27 17.98 4699.23 269.00 4757.99 20.80 5252.80 553.57 2.274 28 17.45 4699.06 269.00 4757.99 23.80 5238.31 539.29 2.274 29 16.40 4698.97 269.53 4757.99 19.11 5259.68 560.71 2.275 30 16.93 4698.97 269.53 4757.99 19.12 5259.68 560.71 2.275 31 17.45 4699.06 269.53 4757.99 17.63 5266.92 567.86 2.275 32 19.03 4699.58 269.00 4757.99 16.50 5274.58 575.00 2.275 33 18.51 4699.41 269.00 4757.99 19.48 5260.12 560.71 2.275 34 17.98 4699.23 269.00 4757.99 22.47 5245.64 546.43 2.275 35 17.45 4699.06 269.00 4757.99 25.48 5231.14 532.14 2.275 36 16.40 4698.97 269.53 4757.99 20.78 5252.52 553.57 2.276 37 16.93 4698.97 269.53 4757.99 20.79 5252.53 553.57 2.276 38 17.45 4699.06 269.53 4757.99 19.30 5259.77 560.71 2.276 39 17.98 4699.23 269.53 4757.99 16.31 5274.23 575.00 2.276 40 19.03 4699.58 269.00 4757.99 18.16 5267.44 567.86 2.276 41 18.51 4699.41 269.00 4757.99 21.15 5252.97 553.57 2.276 42 17.98 4699.23 269.00 4757.99 24.15 5238.48 539.29 2.276 43 17.45 4699.06 269.00 4757.99 27.16 5223.97 525.00 2.276 44 16.40 4698.97 269.53 4757.99 22.45 5245.37 546.43 2.276 45 16.93 4698.97 269.53 4757.99 22.46 5245.37 546.43 2.277 46 17.45 4699.06 269.53 4757.99 20.97 5252.62 553.57 2.277 47 17.98 4699.23 269.53 4757.99 17.98 5267.09 567.86 2.277 48 19.56 4699.76 269.00 4757.99 16.85 5274.75 575.00 2.277 49 19.03 4699.58 269.00 4757.99 19.83 5260.30 560.71 2.277 50 18.51 4699.41 269.00 4757.99 22.82 5245.82 546.43 2.277 51 16.93 4698.97 270.05 4757.99 16.31 5273.97 575.00 2.277 52 16.40 4698.97 270.05 4757.99 16.31 5273.97 575.00 2.277 53 17.98 4699.23 269.00 4757.99 25.83 5231.32 532.14 2.277 54 17.45 4699.06 269.53 4757.99 22.64 5245.46 546.43 2.277 55 17.98 4699.23 269.53 4757.99 19.65 5259.95 560.71 2.278 56 18.51 4699.41 269.53 4757.99 16.67 5274.41 575.00 2.278 57 19.56 4699.76 269.00 4757.99 18.52 5267.62 567.86 2.278 58 19.03 4699.58 269.00 4757.99 21.50 5253.15 553.57 2.278 59 16.40 4698.97 270.05 4757.99 17.97 5266.83 567.86 2.278 60 16.93 4698.97 270.05 4757.99 17.98 5266.83 567.86 2.278 61 18.51 4699.41 269.00 4757.99 24.50 5238.66 539.29 2.278 62 17.45 4699.06 270.05 4757.99 16.49 5274.06 575.00 2.278 63 17.98 4699.23 269.00 4757.99 27.50 5224.15 525.00 2.278 64 17.98 4699.23 269.53 4757.99 21.32 5252.79 553.57 2.278 65 18.51 4699.41 269.53 4757.99 18.34 5267.27 567.86 2.278 66 17.45 4699.06 269.53 4757.99 24.32 5238.30 539.29 2.278 67 20.08 4699.94 269.00 4757.99 17.21 5274.93 575.00 2.279 68 16.40 4698.97 270.05 4757.99 19.64 5259.68 560.71 2.279 69 19.56 4699.76 269.00 4757.99 20.19 5260.47 560.71 2.279 70 16.93 4698.97 270.05 4757.99 19.64 5259.68 560.71 2.279 71 17.45 4699.06 270.05 4757.99 18.15 5266.92 567.86 2.279 72 19.03 4699.58 269.00 4757.99 23.17 5246.00 546.43 2.279 73 18.51 4699.41 269.00 4757.99 26.17 5231.50 532.14 2.279 74 17.98 4699.23 269.00 4757.99 29.18 5216.97 517.86 2.279 75 17.98 4699.23 269.53 4757.99 22.99 5245.64 546.43 2.279 76 19.03 4699.58 269.53 4757.99 17.03 5274.58 575.00 2.279 77 18.51 4699.41 269.53 4757.99 20.00 5260.12 560.71 2.279 78 17.45 4699.06 269.53 4757.99 25.99 5231.13 532.14 2.279 79 16.40 4698.97 270.05 4757.99 21.30 5252.52 553.57 2.280 80 20.08 4699.94 269.00 4757.99 18.88 5267.79 567.86 2.280 81 16.93 4698.97 270.05 4757.99 21.31 5252.52 553.57 2.280 82 17.45 4699.06 270.05 4757.99 19.82 5259.77 560.71 2.280 83 19.56 4699.76 269.00 4757.99 21.86 5253.33 553.57 2.280 84 17.98 4699.23 270.05 4757.99 16.84 5274.23 575.00 2.280 85 19.03 4699.58 269.00 4757.99 24.85 5238.84 539.29 2.280 86 18.51 4699.41 269.00 4757.99 27.85 5224.33 525.00 2.280 87 19.03 4699.58 269.53 4757.99 18.69 5267.44 567.86 2.280 88 18.51 4699.41 269.53 4757.99 21.67 5252.97 553.57 2.280 89 17.98 4699.23 269.53 4757.99 24.66 5238.48 539.29 2.280 90 17.45 4699.06 269.53 4757.99 27.67 5223.96 525.00 2.280 91 17.98 4699.23 269.00 4757.99 30.87 5209.79 510.71 2.280 92 16.40 4698.97 270.05 4757.99 22.97 5245.36 546.43 2.280 93 20.61 4700.11 269.00 4757.99 17.57 5275.10 575.00 2.281 94 16.93 4698.97 270.05 4757.99 22.98 5245.37 546.43 2.281 95 17.45 4699.06 270.05 4757.99 21.49 5252.61 553.57 2.281 96 20.08 4699.94 269.00 4757.99 20.54 5260.65 560.71 2.281 97 17.98 4699.23 270.05 4757.99 18.51 5267.09 567.86 2.281 98 19.56 4699.76 269.00 4757.99 23.52 5246.17 546.43 2.281 99 19.03 4699.58 269.00 4757.99 26.52 5231.67 532.14 2.281 Critical Failure Surface (circle 1) Intersects: XL: 16.40 YL: Centre: XC: 15.25 YC: Generated failure surface: (20 points) 16.40 4698.97 30.17 4701.72 85.08 4703.23 98.73 4712.52 152.77 4715.66 166.10 4731.37 4698.97 5273.97 4699.16 4705.06 4719.11 XR: 269.00 YR: 4757.99 Radius: R: 575.00 43.93 4699.69 57.68 4700.54 112.33 4707.22 125.88 4709.71 179.34 4722.88 192.49 4726.97 71.40 139.36 205.54 218.48 4757.99 4736.08 231.30 4741.10 244.00 4746.43 256.57 4752.06 269.00 Slice Geometry and Properties - Critical Failure Surface (circle 1, 42 slices) Slice X -S Base PoreWater Normal Test X -Left Area Angle Width Length Matl Cohesion Phi Weight Force Stress Factor 1 16.40 5.76 0.8 6.88 6.89 2 10.00 35.0 661.87 0.00 95.66 1.00 2 23.29 20.90 0.8 6.88 6.89 2 10.00 35.0 2403.14 0.00 347.48 1.00 3 30.17 35.44 2.2 6.88 6.89 2 10.00 35.0 4075.69 0.00 585.32 0.99 4 37.05 49.42 2.2 6.88 6.89 2 10.00 35.0 5683.33 0.00 816.26 0.99 5 43.93 62.75 3.5 6.87 6.89 2 10.00 35.0 7216.65 0.00 1030.12 0.98 6 50.80 75.57 3.5 6.87 6.89 2 10.00 35.0 8690.78 0.00 1240.59 0.98 7 57.68 87.65 4.9 6.86 6.89 2 10.00 35.0 10080.06 0.00 1431.01 0.98 8 64.54 99.29 4.9 6.86 6.89 2 10.00 35.0 11418.28 0.00 1621.00 0.98 9 71.40 110.09 6.3 6.84 6.89 2 10.00 35.0 12660.30 0.00 1788.44 0.97 10 78.24 120.54 6.3 6.84 6.89 2 10.00 35.0 13862.42 0.00 1958.30 0.97 11 85.08 130.03 7.7 6.82 6.89 2 10.00 35.0 14953.00 0.00 2103.24 0.97 12 91.91 139.29 7.7 6.82 6.89 2 10.00 35.0 16017.87 0.00 2253.06 0.97 13 98.73 147.44 9.0 6.80 6.89 2 10.00 35.0 16955.62 0.00 2376.06 0.97 14 105.53 155.50 9.0 6.80 6.89 2 10.00 35.0 17882.73 0.00 2506.01 0.97 15 112.33 162.31 10.4 6.77 6.89 2 10.00 35.0 18665.90 0.00 2607.51 0.96 16 119.10 169.18 10.4 6.77 6.89 2 10.00 35.0 19455.74 0.00 2717.87 0.96 17 125.88 174.64 11.8 6.74 6.89 2 10.00 35.0 20083.34 0.00 2798.36 0.96 18 132.62 180.31 11.8 6.74 6.89 2 10.00 35.0 20735.49 0.00 2889.19 0.96 19 0.96 20 0.96 21 0.96 22 0.96 23 0.96 24 0.96 25 0.96 26 0.96 27 0.96 28 0.96 29 0.96 30 0.96 31 0.92 32 0.96 33 0.96 34 0.96 35 0.96 36 0.96 37 0.96 38 0.96 39 0.96 40 1.01 139.36 184.41 13.2 6.70 6.89 2 10.00 35.0 21207.66 0.00 2949.13 146.06 188.89 13.1 6.70 6.89 2 10.00 35.0 21722.65 0.00 3020.83 152.77 191.67 14.5 6.67 6.89 2 10.00 35.0 22041.49 0.00 3060.75 159.43 194.97 14.5 6.67 6.89 2 10.00 35.0 22421.01 0.00 3113.47 166.10 150.80 15.9 5.09 5.29 2 10.00 35.0 17341.63 0.00 3129.89 171.19 152.05 15.9 5.09 5.29 2 10.00 35.0 17486.28 0.00 3156.01 176.28 92.13 15.9 3.06 3.18 2 10.00 35.0 10571.38 0.00 3171.26 179.34 161.97 17.3 5.35 5.61 2 10.00 35.0 18469.03 0.00 3146.37 184.70 162.89 17.3 5.35 5.61 2 10.00 35.0 18427.15 0.00 3139.15 190.05 73.62 17.3 2.44 2.56 2 10.00 35.0 8293.02 0.00 3095.75 192.49 152.04 18.6 5.27 5.56 2 10.00 35.0 17112.46 0.00 2940.31 197.76 142.66 18.6 5.27 5.56 2 10.00 35.0 16033.65 0.00 2754.78 203.03 64.72 18.6 2.51 2.65 6 0.00 45.0 6471.75 0.00 2242.76 205.54 156.31 20.0 6.47 6.89 2 10.00 35.0 17519.16 0.00 2432.55 212.01 141.04 20.0 6.47 6.89 2 10.00 35.0 15763.43 0.00 2188.67 218.48 124.14 21.4 6.41 6.89 2 10.00 35.0 13824.26 0.00 1921.95 224.89 108.02 21.4 6.41 6.89 2 10.00 35.0 11970.57 0.00 1664.02 231.30 66.94 22.8 4.58 4.96 2 10.00 35.0 7375.76 0.00 1425.39 235.88 98.98 22.8 8.12 8.81 2 10.00 35.0 10783.94 0.00 1173.64 244.00 58.93 24.1 6.22 6.81 2 10.00 35.0 6282.76 0.00 885.87 250.22 43.71 24.1 6.22 6.81 2 10.00 35.0 4501.28 0.00 634.19 256.44 18.01 25.5 3.56 3.94 1 50.00 25.0 1801.18 0.00 451.14 41 1.01 42 1.01 260.00 14.53 25.5 4.50 4.99 ? 50.00 25.0 1452.99 0.00 284.47 264.50 4.84 25.5 4.50 4.99 1 50.00 25.0 484.30 0.00 88.42 X -S Area: 4674.39 Path Length: 261.65 X -S Weight: 530861.00 Reclamation Conditions J&T Consulting, Inc. Central Colorado Water Conservancy District— Sweet Valley Pit Slope Stability Analysis GALENA 7.2 Analysis Results Version: 7.2.3.05 Licensee: J & T Consulting Project: Sweet Valley Pit File: P:\23038 CCWCD J2 Meining Farm\DRMS Permit\112 Permit\Slope Stability\Galena\S.V. Pit-SS1-Reclamation.gmf Processed: 05 Mar 2024 08:34:55 DATA: Analysis 1 - SS -1 - Reclamation Slope - Static Material Properties (6 materials) Material: 1 (Mohr -Coulomb Isotropic) - Overburden/Clay Cohesion Phi UnitWeight Ru Unsaturated: 50.00 25.0 100.00 Auto Saturated: 50.00 25.0 115.00 Auto Material: 2 (Mohr -Coulomb Isotropic) - Sand and Gravel Cohesion Phi UnitWeight Ru Unsaturated: 10.00 35.0 115.00 Auto Saturated: 10.00 35.0 130.00 Auto Material: 3 (Mohr -Coulomb Isotropic) - Stable Claystone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 120.00 Auto Saturated: 3000.00 0.0 135.00 Auto Material: 4 (Mohr -Coulomb Isotropic) - Stable Siltstone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 117.00 Auto Saturated: 3000.00 0.0 133.00 Auto Material: 5 (Mohr -Coulomb Isotropic) - Stable Sandstone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 115.00 Auto Saturated: 3000.00 0.0 128.00 Auto Material: 6 (Mohr -Coulomb Isotropic) - Slurry Wall Cohesion Phi UnitWeight Ru Unsaturated: 0.00 45.0 100.00 Auto Saturated: 0.00 45.0 110.00 Auto Water Properties Unit weight of water: 62.400 Unit weight of water/medium above ground: 62.400 Material Profiles (7 profiles) Profile: 1 (12 points) Material beneath: 1 - Overburden/Clay 0.00 4754.96 81.03 4754.96 118.00 4753.00 4753.63 229.99 4753.00 251.81 4753.00 267.98 4753.00 4756.00 305.51 4753.19 321.07 4748.00 Profile: 2 (2 points) Material beneath: 6 - Slurry Wall 288.62 4753.10 291.62 4753.10 Profile: 3 (2 points) Material beneath: 2 - Sand and Gravel 0.00 4748.00 288.62 4748.00 Profile: 4 (3 points) Material beneath: 2 - Sand and Gravel 291.62 4748.00 321.07 4748.00 470.50 4698.19 Profile: 5 (5 points) Material beneath: 4 - Stable Siltstone Bedrock 0.00 4697.69 98.47 4697.69 290.49 4697.83 4698.00 Profile: 6 (5 points) Material beneath: 3 - Stable Claystone Bedrock 0.00 4695.69 98.47 4695.69 290.49 4695.83 4696.00 Profile: 7 (5 points) Material beneath: 5 - Stable Sandstone Bedrock 0.00 4693.69 98.47 4693.69 290.49 4693.83 4694.00 Slope Surface (14 points) 0.00 4754.96 4753.63 229.99 4753.00 4756.00 305.51 4753.19 Phreatic Surface (5 points) 0.00 4698.00 Failure Surface 4727.00 81.03 251.81 321.07 4754.96 4753.00 4748.00 288.62 4727.00 118.00 267.98 470.50 4753.00 4753.00 4698.19 291.62 4726.00 170.00 277.26 470.50 470.50 470.50 4754.00 199.95 4756.02 297.26 4698.19 4696.19 4694.19 170.00 4754.00 277.26 4756.02 600.00 4698.00 470.50 4698.19 Initial circular surface for critical search defined by: XL,XR,R Intersects: XL: 266.90 YL: 4753.00 XR: 470.50 YR: 4698.19 Centre: XC: 441.71 YC: 4996.81 Radius: R: 300.00 Variable Restraints Parameter descriptor: Range of variation: Trial positions within range: XL 10.00 20 XR 10.00 20 R 250.00 50 600.00 600.00 600.00 199.95 297.26 600.00 RESULTS: Analysis 1 - SS -1 - Reclamation Slope - Static Bishop Simplified Method of Analysis - Circular Failure Surface Critical Failure Surface Search using Multiple Circle Generation Techniques Initial failure surface approximation - Factor of Safety: 3.401 Analysis Summary There were: 18855 successful analyses from a total of 20001 trial failure surfaces 1146 analyses terminated due to unacceptable geometry Critical (minimum) Factor of Safety: 2.21 Results Summary - Lowest 99 Factor of Safety circles Circle X -Left Y -Left X -Right Y -Right X -Centre Y -Centre Radius FoS 1 271.90 4754.28 467.08 4699.33 440.84 4980.25 282.14 2.211 <-- Critical Surface 2 271.90 4754.28 466.55 4699.51 439.09 4975.18 277.04 2.212 3 271.90 4754.28 466.03 4699.68 437.34 4970.10 271.94 2.213 4 271.90 4754.28 465.50 4699.86 435.58 4965.01 266.84 2.214 5 271.90 4754.28 468.13 4698.98 445.81 4995.59 297.45 2.215 6 271.90 4754.28 467.61 4699.15 444.06 4990.55 292.35 2.216 7 271.90 4754.28 467.08 4699.33 442.32 4985.51 287.24 2.216 8 271.90 4754.28 466.55 4699.51 440.57 4980.45 282.14 2.217 9 271.37 4754.10 466.03 4699.68 436.68 4970.03 271.94 2.218 10 271.90 4754.28 466.03 4699.68 438.82 4975.38 277.04 2.218 11 271.90 4754.28 468.66 4698.80 449.02 5005.83 307.65 2.219 12 271.90 4754.28 465.50 4699.86 437.07 4970.31 271.94 2.219 13 271.90 4754.28 468.13 4698.98 447.28 5000.81 302.55 2.220 14 271.37 4754.10 467.61 4699.15 443.38 4990.50 292.35 2.220 15 271.90 4754.28 467.61 4699.15 445.54 4995.78 297.45 2.221 16 271.37 4754.10 467.08 4699.33 441.64 4985.45 287.24 2.221 17 271.90 4754.28 467.08 4699.33 443.79 4990.75 292.35 2.222 18 271.37 4754.10 466.55 4699.51 439.90 4980.39 282.14 2.222 19 271.90 4754.28 466.55 4699.51 442.05 4985.70 287.24 2.223 20 271.90 4754.28 469.18 4698.63 452.22 5016.03 317.86 2.223 21 271.37 4754.10 466.03 4699.68 438.16 4975.32 277.04 2.223 22 271.90 4754.28 466.03 4699.68 440.30 4980.65 282.14 2.224 23 271.37 4754.10 465.50 4699.86 436.41 4970.24 271.94 2.224 24 271.90 4754.28 468.66 4698.80 450.49 5011.03 312.76 2.224 25 271.90 4754.28 465.50 4699.86 438.56 4975.58 277.04 2.224 26 271.37 4754.10 468.13 4698.98 446.58 5000.76 302.55 2.225 27 271.90 4754.28 468.13 4698.98 448.75 5006.02 307.65 2.225 28 271.37 4754.10 467.61 4699.15 444.84 4995.73 297.45 2.226 29 271.90 4754.28 467.61 4699.15 447.01 5001.00 302.55 2.226 30 270.85 4753.93 467.08 4699.33 440.96 4985.39 287.24 2.226 31 271.37 4754.10 467.08 4699.33 443.11 4990.69 292.35 2.227 32 271.90 4754.28 467.08 4699.33 445.27 4995.98 297.45 2.227 33 270.85 4753.93 466.55 4699.51 439.23 4980.32 282.14 2.227 34 271.37 4754.10 469.18 4698.63 451.51 5015.99 317.86 2.228 35 271.37 4754.10 466.55 4699.51 441.37 4985.64 287.24 2.228 36 271.90 4754.28 469.18 4698.63 453.69 5021.22 322.96 2.228 37 271.90 4754.28 466.55 4699.51 443.52 4990.94 292.35 2.228 38 270.85 4753.93 466.03 4699.68 437.49 4975.25 277.04 2.228 39 271.37 4754.10 466.03 4699.68 439.63 4980.59 282.14 2.228 40 271.37 4754.10 468.66 4698.80 449.77 5010.99 312.76 2.229 41 271.90 4754.28 466.03 4699.68 441.78 4985.90 287.24 2.229 42 270.85 4753.93 465.50 4699.86 435.76 4970.16 271.94 2.229 43 271.90 4754.28 468.66 4698.80 451.95 5016.22 317.86 2.229 44 271.37 4754.10 465.50 4699.86 437.89 4975.52 277.04 2.229 45 270.85 4753.93 468.13 4698.98 445.88 5000.71 302.55 2.230 46 271.90 4754.28 465.50 4699.86 440.04 4980.85 282.14 2.230 47 271.37 4754.10 468.13 4698.98 448.04 5005.98 307.65 2.230 48 271.90 4754.28 468.13 4698.98 450.21 5011.22 312.76 2.230 49 270.85 4753.93 467.61 4699.15 444.15 4995.68 297.45 2.231 50 271.37 4754.10 467.61 4699.15 446.31 5000.96 302.55 2.231 51 271.90 4754.28 467.61 4699.15 448.47 5006.21 307.65 2.231 52 271.90 4754.28 469.71 4698.45 456.88 5031.37 333.16 2.231 53 270.85 4753.93 467.08 4699.33 442.42 4990.64 292.35 2.232 54 271.37 4754.10 467.08 4699.33 444.57 4995.93 297.45 2.232 55 271.90 4754.28 467.08 4699.33 446.74 5001.20 302.55 2.232 56 271.37 4754.10 469.18 4698.63 452.96 5021.18 322.96 2.233 57 270.85 4753.93 466.55 4699.51 440.69 4985.58 287.24 2.233 58 271.90 4754.28 469.18 4698.63 455.14 5026.39 328.06 2.233 59 271.37 4754.10 466.55 4699.51 442.84 4990.89 292.35 2.233 60 271.90 4754.28 466.55 4699.51 444.99 4996.17 297.45 2.233 61 270.32 4753.76 466.55 4699.51 438.56 4980.26 282.14 2.233 62 270.85 4753.93 466.03 4699.68 438.96 4980.52 282.14 2.234 63 271.37 4754.10 466.03 4699.68 441.10 4985.84 287.24 2.234 64 270.85 4753.93 468.66 4698.80 449.06 5010.94 312.76 2.234 65 271.37 4754.10 468.66 4698.80 451.23 5016.18 317.86 2.234 66 271.90 4754.28 468.66 4698.80 453.41 5021.40 322.96 2.234 67 271.90 4754.28 466.03 4699.68 443.25 4991.14 292.35 2.234 68 270.85 4753.93 465.50 4699.86 437.23 4975.45 277.04 2.234 69 270.32 4753.76 466.03 4699.68 436.83 4975.18 277.04 2.235 70 271.37 4754.10 465.50 4699.86 439.36 4980.79 282.14 2.235 71 270.85 4753.93 468.13 4698.98 447.34 5005.93 307.65 2.235 72 271.37 4754.10 468.13 4698.98 449.50 5011.18 312.76 2.235 73 271.90 4754.28 465.50 4699.86 441.51 4986.10 287.24 2.235 74 271.90 4754.28 468.13 4698.98 451.67 5016.41 317.86 2.235 75 270.32 4753.76 465.50 4699.86 435.10 4970.09 271.94 2.236 76 270.85 4753.93 467.61 4699.15 445.61 5000.91 302.55 2.236 77 270.32 4753.76 467.61 4699.15 443.47 4995.62 297.45 2.236 78 271.37 4754.10 467.61 4699.15 447.77 5006.17 307.65 2.236 79 271.37 4754.10 469.71 4698.45 456.14 5031.34 333.16 2.236 80 271.90 4754.28 469.71 4698.45 458.33 5036.53 338.27 2.236 81 271.90 4754.28 467.61 4699.15 449.94 5011.41 312.76 2.237 82 270.85 4753.93 467.08 4699.33 443.88 4995.87 297.45 2.237 83 270.32 4753.76 467.08 4699.33 441.74 4990.58 292.35 2.237 84 271.37 4754.10 467.08 4699.33 446.03 5001.15 302.55 2.237 85 271.37 4754.10 469.18 4698.63 454.41 5026.36 328.06 2.238 86 271.90 4754.28 467.08 4699.33 448.20 5006.40 307.65 2.238 87 270.85 4753.93 469.18 4698.63 452.24 5021.14 322.96 2.238 88 271.90 4754.28 469.18 4698.63 456.60 5031.55 333.16 2.238 89 270.85 4753.93 466.55 4699.51 442.15 4990.83 292.35 2.238 90 271.37 4754.10 465.50 4699.86 434.93 4964.94 266.84 2.238 91 271.37 4754.10 466.55 4699.51 444.30 4996.12 297.45 2.238 92 270.32 4753.76 466.55 4699.51 440.02 4985.52 287.24 2.238 93 271.90 4754.28 466.55 4699.51 446.46 5001.39 302.55 2.239 94 270.85 4753.93 468.66 4698.80 450.51 5016.14 317.86 2.239 95 270.85 4753.93 466.03 4699.68 440.42 4985.78 287.24 2.239 96 271.37 4754.10 468.66 4698.80 452.68 5021.37 322.96 2.239 97 270.32 4753.76 468.66 4698.80 448.35 5010.90 312.76 2.239 98 271.37 4754.10 466.03 4699.68 442.57 4991.09 292.35 2.239 99 271.90 4754.28 468.66 4698.80 454.87 5026.58 328.06 2.239 Critical Failure Surface (circle 1) Intersects: XL: 271.90 YL: 4754.28 XR: 467.08 YR: 4699.33 Centre: XC: 440.84 YC: 4980.25 Radius: R: 282.14 Generated failure surface: (20 points) 271.90 4754.28 280.77 4747.91 289.87 4741.89 299.21 4736.23 4730.94 318.49 4726.01 328.42 4721.47 338.51 4717.32 348.76 4713.56 4710.19 369.65 4707.24 380.26 4704.69 390.97 4702.55 401.75 4700.83 4699.53 308.75 359.14 412.58 423.46 4699.33 4698.64 434.37 4698.18 445.28 4698.14 456.19 4698.53 467.08 Slice Geometry and Properties - Critical Failure Surface (circle 1, 42 slices) Slice X -S Base PoreWater Normal Test X -Left Area Angle Width Length Matl Cohesion Phi Weight Force Stress Factor 1 271.90 14.99 35.7 5.36 6.60 1 50.00 25.0 1498.61 0.00 228.73 1.07 2 277.26 23.01 35.7 3.38 4.16 1 50.00 25.0 2301.34 0.00 576.91 1.07 3 280.64 37.26 33.5 3.99 4.79 2 10.00 35.0 3804.94 0.00 785.96 0.99 4 284.63 47.76 33.5 3.99 4.78 2 10.00 35.0 5012.52 0.00 1036.69 0.99 5 288.62 17.18 33.5 1.25 1.50 6 0.00 45.0 1717.91 0.00 1054.86 0.92 6 289.87 25.57 31.2 1.75 2.04 6 0.00 45.0 2556.99 0.00 1149.16 0.92 7 291.62 95.20 31.2 5.64 6.60 2 10.00 35.0 10271.27 0.00 1525.42 0.98 8 297.26 36.68 31.2 1.95 2.28 2 10.00 35.0 3994.72 0.00 1719.31 0.98 9 299.21 124.69 29.0 6.30 7.21 2 10.00 35.0 13746.58 0.00 1852.74 0.97 10 305.51 67.46 29.0 3.24 3.71 2 10.00 35.0 7531.85 0.00 1974.45 0.97 11 308.75 105.17 26.8 4.87 5.46 2 10.00 35.0 11853.95 0.00 2095.86 0.97 12 313.62 109.25 26.8 4.87 5.46 2 10.00 35.0 12441.39 0.00 2199.89 0.97 13 318.49 59.28 24.6 2.58 2.83 2 10.00 35.0 6800.31 0.00 2303.36 0.96 14 321.07 85.96 24.6 3.67 4.04 2 10.00 35.0 9885.31 0.00 2347.97 0.96 15 324.74 87.64 24.6 3.67 4.04 2 10.00 35.0 10078.23 0.00 2393.83 0.96 16 328.42 112.92 22.4 4.65 5.03 2 10.00 35.0 12985.86 0.00 2466.68 0.96 17 333.07 134.12 22.4 5.44 5.88 2 10.00 35.0 15480.04 255.57 2521.13 0.96 18 338.51 127.86 20.2 5.12 5.46 2 10.00 35.0 14652.67 659.16 2608.23 0.95 19 0.95 20 0.95 21 0.95 22 0.95 23 0.95 24 0.96 25 0.96 26 0.96 27 0.96 28 0.96 29 0.96 30 0.97 31 0.97 32 0.98 33 0.98 34 0.99 35 0.99 36 1.00 37 1.00 38 1.01 39 1.01 40 1.03 343.64 128.74 20.2 5.12 5.46 2 10.00 35.0 15037.21 1028.14 348.76 130.79 17.9 5.19 5.46 2 10.00 35.0 15352.73 1361.58 353.95 130.53 17.9 5.19 5.46 2 10.00 35.0 15390.73 1659.07 359.14 131.23 15.7 5.25 5.46 2 10.00 35.0 15535.73 1920.80 364.40 129.80 15.7 5.25 5.46 2 10.00 35.0 15423.35 2146.13 369.65 129.08 13.5 5.31 5.46 2 10.00 35.0 15390.04 2335.50 374.96 126.45 13.5 5.31 5.46 2 10.00 35.0 15123.98 2488.65 380.26 124.30 11.3 5.35 5.46 2 10.00 35.0 14908.30 2605.39 385.62 120.47 11.3 5.35 5.46 2 10.00 35.0 14487.03 2686.09 390.97 116.86 9.1 5.39 5.46 2 10.00 35.0 14086.55 2730.15 396.36 111.82 9.1 5.39 5.46 2 10.00 35.0 13508.80 2737.91 401.75 106.76 6.9 5.42 5.46 2 10.00 35.0 12923.85 2709.16 407.17 100.50 6.9 5.42 5.46 2 10.00 35.0 12188.74 2644.14 412.58 94.02 4.6 5.44 5.46 2 10.00 35.0 11421.48 2542.71 418.02 86.56 4.6 5.44 5.46 2 10.00 35.0 10530.41 2405.01 423.46 78.70 2.4 5.45 5.46 2 10.00 35.0 9586.11 2231.09 428.92 70.04 2.4 5.45 5.46 2 10.00 35.0 8540.56 2021.07 434.37 60.87 0.2 5.46 5.46 2 10.00 35.0 7426.12 1774.79 439.83 51.04 0.2 5.46 5.46 2 10.00 35.0 6228.65 1492.43 445.28 40.62 -2.0 5.45 5.46 2 10.00 35.0 4953.97 1174.32 450.74 29.66 -2.0 5.45 5.46 2 10.00 35.0 3607.98 820.14 456.19 14.80 -4.2 4.12 4.13 2 10.00 35.0 1789.38 364.89 2647.54 2703.73 2715.43 2742.83 2726.55 2724.38 2679.77 2647.46 2574.25 2511.31 2409.40 2315.29 2184.17 2058.33 1898.01 1740.01 1550.26 1359.50 1140.28 916.22 667.41 443.28 41 1.03 42 1.03 460.31 7.90 -4.2 4.12 4.13 2 10.00 35.0 937.43 121.63 232.81 464.43 1.43 -4.2 2.65 2.66 2 10.00 35.0 164.83 0.00 63.99 X -S Area: 3434.95 Path Length: 207.39 X -S Weight: 401358.53 GALENA 7.2 Analysis Results Version: 7.2.3.05 Licensee: J & T Consulting Project: Sweet Valley Pit File: P:\23038 CCWCD J2 Meining Farm\DRMS Permit\112 Permit\Slope Stability\Gale...\S.V. Pit-SS1-Reclamation- Pseudo Static.gmf Processed: 05 Mar 2024 08:38:55 DATA: Analysis 1 - SS -1 - Reclamation Slope - Pseudo Static Material Properties (6 materials) Material: 1 (Mohr -Coulomb Isotropic) - Overburden/Clay Cohesion Phi UnitWeight Ru Unsaturated: 50.00 25.0 100.00 Auto Saturated: 50.00 25.0 115.00 Auto Material: 2 (Mohr -Coulomb Isotropic) - Sand and Gravel Cohesion Phi UnitWeight Ru Unsaturated: 10.00 35.0 115.00 Auto Saturated: 10.00 35.0 130.00 Auto Material: 3 (Mohr -Coulomb Isotropic) - Stable Claystone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 120.00 Auto Saturated: 3000.00 0.0 135.00 Auto Material: 4 (Mohr -Coulomb Isotropic) - Stable Siltstone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 117.00 Auto Saturated: 3000.00 0.0 133.00 Auto Material: 5 (Mohr -Coulomb Isotropic) - Stable Sandstone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 115.00 Auto Saturated: 3000.00 0.0 128.00 Auto Material: 6 (Mohr -Coulomb Isotropic) - Slurry Wall Cohesion Phi UnitWeight Ru Unsaturated: 0.00 45.0 100.00 Auto Saturated: 0.00 45.0 110.00 Auto Water Properties Unit weight of water: 62.400 Unit weight of water/medium above ground: 62.400 Material Profiles (7 profiles) Profile: 1 (12 points) Material beneath: 1 - Overburden/Clay 0.00 4754.96 81.03 4754.96 118.00 4753.00 170.00 4753.63 229.99 4753.00 251.81 4753.00 267.98 4753.00 277.26 4756.00 305.51 4753.19 321.07 4748.00 Profile: 2 (2 points) Material beneath: 6 - Slurry Wall 288.62 4753.10 291.62 4753.10 Profile: 3 (2 points) Material beneath: 2 - Sand and Gravel 0.00 4748.00 288.62 4748.00 Profile: 4 (3 points) Material beneath: 2 - Sand and Gravel 291.62 4748.00 321.07 4748.00 470.50 4698.19 Profile: 5 (5 points) Material beneath: 4 - Stable Siltstone Bedrock 0.00 4697.69 98.47 4697.69 290.49 4697.83 470.50 4698.00 Profile: 6 (5 points) Material beneath: 3 - Stable Claystone Bedrock 0.00 4695.69 98.47 4695.69 290.49 4695.83 470.50 4696.00 Profile: 7 (5 points) Material beneath: 5 - Stable Sandstone Bedrock 0.00 4693.69 98.47 4693.69 290.49 4693.83 470.50 4694.00 Slope Surface (14 points) 0.00 4754.96 4753.63 229.99 4753.00 4756.00 305.51 4753.19 Phreatic Surface (5 points) 0.00 4698.00 Failure Surface 4727.00 81.03 251.81 321.07 4754.96 4753.00 4748.00 288.62 4727.00 118.00 267.98 470.50 4753.00 4753.00 4698.19 291.62 4726.00 4754.00 199.95 4756.02 297.26 4698.19 600.00 4696.19 600.00 4694.19 600.00 170.00 4754.00 277.26 4756.02 600.00 4698.00 470.50 4698.19 Initial circular surface for critical search defined by: XL,XR,R Intersects: XL: 266.90 YL: 4753.00 XR: 470.50 YR: 4698.19 Centre: XC: 441.71 YC: 4996.81 Radius: R: 300.00 Earthquake Force Pseudo -static earthquake (seismic) coefficient: 0.070 199.95 297.26 600.00 Variable Restraints Parameter descriptor: XL XR R Range of variation: 10.00 10.00 250.00 Trial positions within range: 20 20 50 RESULTS: Analysis 1 - SS -1 - Reclamation Slope - Pseudo Static Bishop Simplified Method of Analysis - Circular Failure Surface Critical Failure Surface Search using Multiple Circle Generation Techniques Initial failure surface approximation - Factor of Safety: 2.717 Analysis Summary There were: 18855 successful analyses from a total of 20001 trial failure surfaces 1146 analyses terminated due to unacceptable geometry Critical (minimum) Factor of Safety: 1.76 Results Summary - Lowest 99 Factor of Safety circles Circle X -Left Y -Left X -Right Y -Right X -Centre Y -Centre Radius FoS 1 271.90 4754.28 467.08 4699.33 440.84 4980.25 282.14 1.755 <-- Critical Surface 2 271.90 4754.28 466.55 4699.51 439.09 4975.18 277.04 1.756 3 271.90 4754.28 466.03 4699.68 437.34 4970.10 271.94 1.757 4 271.90 4754.28 465.50 4699.86 435.58 4965.01 266.84 1.757 5 271.90 4754.28 468.13 4698.98 445.81 4995.59 297.45 1.758 6 271.90 4754.28 467.61 4699.15 444.06 4990.55 292.35 1.759 7 271.37 4754.10 466.03 4699.68 436.68 4970.03 271.94 1.759 8 271.90 4754.28 467.08 4699.33 442.32 4985.51 287.24 1.760 9 271.90 4754.28 466.55 4699.51 440.57 4980.45 282.14 1.760 10 271.90 4754.28 466.03 4699.68 438.82 4975.38 277.04 1.761 11 271.90 4754.28 465.50 4699.86 437.07 4970.31 271.94 1.761 12 271.37 4754.10 467.61 4699.15 443.38 4990.50 292.35 1.762 13 271.90 4754.28 468.66 4698.80 449.02 5005.83 307.65 1.762 14 271.37 4754.10 467.08 4699.33 441.64 4985.45 287.24 1.762 15 271.90 4754.28 468.13 4698.98 447.28 5000.81 302.55 1.762 16 271.37 4754.10 466.55 4699.51 439.90 4980.39 282.14 1.763 17 271.90 4754.28 467.61 4699.15 445.54 4995.78 297.45 1.763 18 271.37 4754.10 466.03 4699.68 438.16 4975.32 277.04 1.764 19 271.90 4754.28 467.08 4699.33 443.79 4990.75 292.35 1.764 20 271.37 4754.10 465.50 4699.86 436.41 4970.24 271.94 1.764 21 271.90 4754.28 466.55 4699.51 442.05 4985.70 287.24 1.765 22 271.90 4754.28 469.18 4698.63 452.22 5016.03 317.86 1.765 23 271.37 4754.10 468.13 4698.98 446.58 5000.76 302.55 1.765 24 270.85 4753.93 467.08 4699.33 440.96 4985.39 287.24 1.765 25 271.90 4754.28 466.03 4699.68 440.30 4980.65 282.14 1.765 26 270.85 4753.93 466.55 4699.51 439.23 4980.32 282.14 1.766 27 271.90 4754.28 465.50 4699.86 438.56 4975.58 277.04 1.766 28 271.90 4754.28 468.66 4698.80 450.49 5011.03 312.76 1.766 29 271.37 4754.10 467.61 4699.15 444.84 4995.73 297.45 1.766 30 270.85 4753.93 466.03 4699.68 437.49 4975.25 277.04 1.766 31 271.37 4754.10 467.08 4699.33 443.11 4990.69 292.35 1.767 32 271.90 4754.28 468.13 4698.98 448.75 5006.02 307.65 1.767 33 270.85 4753.93 465.50 4699.86 435.76 4970.16 271.94 1.767 34 271.37 4754.10 466.55 4699.51 441.37 4985.64 287.24 1.767 35 271.90 4754.28 467.61 4699.15 447.01 5001.00 302.55 1.767 36 271.37 4754.10 469.18 4698.63 451.51 5015.99 317.86 1.768 37 270.85 4753.93 468.13 4698.98 445.88 5000.71 302.55 1.768 38 271.37 4754.10 466.03 4699.68 439.63 4980.59 282.14 1.768 39 271.90 4754.28 467.08 4699.33 445.27 4995.98 297.45 1.768 40 271.37 4754.10 468.66 4698.80 449.77 5010.99 312.76 1.768 41 271.37 4754.10 465.50 4699.86 437.89 4975.52 277.04 1.769 42 270.85 4753.93 467.61 4699.15 444.15 4995.68 297.45 1.769 43 271.90 4754.28 466.55 4699.51 443.52 4990.94 292.35 1.769 44 271.90 4754.28 469.18 4698.63 453.69 5021.22 322.96 1.769 45 271.37 4754.10 468.13 4698.98 448.04 5005.98 307.65 1.769 46 270.32 4753.76 466.55 4699.51 438.56 4980.26 282.14 1.769 47 270.85 4753.93 467.08 4699.33 442.42 4990.64 292.35 1.769 48 271.90 4754.28 466.03 4699.68 441.78 4985.90 287.24 1.770 49 271.90 4754.28 468.66 4698.80 451.95 5016.22 317.86 1.770 50 271.37 4754.10 467.61 4699.15 446.31 5000.96 302.55 1.770 51 270.85 4753.93 466.55 4699.51 440.69 4985.58 287.24 1.770 52 271.90 4754.28 465.50 4699.86 440.04 4980.85 282.14 1.770 53 270.32 4753.76 466.03 4699.68 436.83 4975.18 277.04 1.770 54 270.85 4753.93 466.03 4699.68 438.96 4980.52 282.14 1.771 55 271.37 4754.10 467.08 4699.33 444.57 4995.93 297.45 1.771 56 271.90 4754.28 468.13 4698.98 450.21 5011.22 312.76 1.771 57 270.32 4753.76 465.50 4699.86 435.10 4970.09 271.94 1.771 58 270.85 4753.93 468.66 4698.80 449.06 5010.94 312.76 1.771 59 270.85 4753.93 465.50 4699.86 437.23 4975.45 277.04 1.771 60 271.37 4754.10 466.55 4699.51 442.84 4990.89 292.35 1.772 61 270.32 4753.76 467.61 4699.15 443.47 4995.62 297.45 1.772 62 271.37 4754.10 469.18 4698.63 452.96 5021.18 322.96 1.772 63 271.90 4754.28 467.61 4699.15 448.47 5006.21 307.65 1.772 64 271.90 4754.28 469.71 4698.45 456.88 5031.37 333.16 1.772 65 270.85 4753.93 468.13 4698.98 447.34 5005.93 307.65 1.772 66 271.37 4754.10 466.03 4699.68 441.10 4985.84 287.24 1.772 67 270.32 4753.76 467.08 4699.33 441.74 4990.58 292.35 1.772 68 271.90 4754.28 467.08 4699.33 446.74 5001.20 302.55 1.773 69 271.37 4754.10 468.66 4698.80 451.23 5016.18 317.86 1.773 70 271.37 4754.10 465.50 4699.86 439.36 4980.79 282.14 1.773 71 270.85 4753.93 467.61 4699.15 445.61 5000.91 302.55 1.773 72 271.90 4754.28 469.18 4698.63 455.14 5026.39 328.06 1.773 73 271.90 4754.28 466.55 4699.51 444.99 4996.17 297.45 1.773 74 270.32 4753.76 466.55 4699.51 440.02 4985.52 287.24 1.773 75 271.37 4754.10 468.13 4698.98 449.50 5011.18 312.76 1.774 76 270.85 4753.93 467.08 4699.33 443.88 4995.87 297.45 1.774 77 271.90 4754.28 466.03 4699.68 443.25 4991.14 292.35 1.774 78 271.90 4754.28 468.66 4698.80 453.41 5021.40 322.96 1.774 79 270.32 4753.76 468.66 4698.80 448.35 5010.90 312.76 1.774 80 271.37 4754.10 467.61 4699.15 447.77 5006.17 307.65 1.774 81 270.32 4753.76 466.03 4699.68 438.29 4980.46 282.14 1.774 82 270.85 4753.93 466.55 4699.51 442.15 4990.83 292.35 1.774 83 270.85 4753.93 469.18 4698.63 452.24 5021.14 322.96 1.775 84 271.90 4754.28 465.50 4699.86 441.51 4986.10 287.24 1.775 85 271.37 4754.10 469.71 4698.45 456.14 5031.34 333.16 1.775 86 270.32 4753.76 468.13 4698.98 446.63 5005.88 307.65 1.775 87 270.85 4753.93 466.03 4699.68 440.42 4985.78 287.24 1.775 88 271.90 4754.28 468.13 4698.98 451.67 5016.41 317.86 1.775 89 271.37 4754.10 467.08 4699.33 446.03 5001.15 302.55 1.775 90 270.32 4753.76 465.50 4699.86 436.56 4975.38 277.04 1.775 91 270.85 4753.93 468.66 4698.80 450.51 5016.14 317.86 1.775 92 270.85 4753.93 465.50 4699.86 438.69 4980.72 282.14 1.776 93 271.37 4754.10 469.18 4698.63 454.41 5026.36 328.06 1.776 94 270.32 4753.76 467.61 4699.15 444.91 5000.85 302.55 1.776 95 271.37 4754.10 465.50 4699.86 434.93 4964.94 266.84 1.776 96 271.37 4754.10 466.55 4699.51 444.30 4996.12 297.45 1.776 97 271.90 4754.28 467.61 4699.15 449.94 5011.41 312.76 1.776 98 271.90 4754.28 469.71 4698.45 458.33 5036.53 338.27 1.776 99 270.85 4753.93 468.13 4698.98 448.79 5011.14 312.76 1.776 Critical Failure Surface (circle 1) Intersects: XL: 271.90 YL: 4754.28 XR: 467.08 YR: 4699.33 Centre: XC: 440.84 YC: 4980.25 Radius: R: 282.14 Generated failure surface: (20 points) 271.90 4730.94 318.49 4710.19 369.65 4699.53 423.46 4699.33 4754.28 4726.01 4707.24 4698.64 280.77 4747.91 328.42 4721.47 380.26 4704.69 434.37 4698.18 289.87 4741.89 338.51 4717.32 390.97 4702.55 445.28 4698.14 Slice Geometry and Properties - Critical Failure Surface (circle 1, 42 slices) 299.21 4736.23 308.75 348.76 4713.56 359.14 401.75 4700.83 412.58 456.19 4698.53 467.08 Slice X -S Base PoreWater Normal Test X -Left Area Angle Width Length Matl Cohesion Phi Weight Force Stress Factor 1 271.90 14.99 35.7 5.36 6.60 1 50.00 25.0 1498.61 0.00 217.63 1.03 2 277.26 23.01 35.7 3.38 4.16 1 50.00 25.0 2301.34 0.00 554.31 1.03 3 280.64 37.26 33.5 3.99 4.79 2 10.00 35.0 3804.94 0.00 751.46 0.95 4 284.63 47.76 33.5 3.99 4.78 2 10.00 35.0 5012.52 0.00 991.47 0.95 5 288.62 17.18 33.5 1.25 1.50 6 0.00 45.0 1717.91 0.00 995.36 0.87 6 289.87 25.57 31.2 1.75 2.04 6 0.00 45.0 2556.99 0.00 1088.29 0.87 7 291.62 95.20 31.2 5.64 6.60 2 10.00 35.0 10271.27 0.00 1463.56 0.94 8 297.26 36.68 31.2 1.95 2.28 2 10.00 35.0 3994.72 0.00 1649.65 0.94 9 299.21 124.69 29.0 6.30 7.21 2 10.00 35.0 13746.58 0.00 1782.96 0.94 10 305.51 67.46 29.0 3.24 3.71 2 10.00 35.0 7531.85 0.00 1900.12 0.94 11 308.75 105.17 26.8 4.87 5.46 2 10.00 35.0 11853.95 0.00 2022.85 0.93 12 313.62 109.25 26.8 4.87 5.46 2 10.00 35.0 12441.39 0.00 2123.30 0.93 13 318.49 59.28 24.6 2.58 2.83 2 10.00 35.0 6800.31 0.00 2229.57 0.93 14 321.07 85.96 24.6 3.67 4.04 2 10.00 35.0 9885.31 0.00 2272.76 0.93 15 324.74 87.64 24.6 3.67 4.04 2 10.00 35.0 10078.23 0.00 2317.16 0.93 16 0.93 17 0.93 18 0.93 19 0.93 20 0.93 21 0.93 22 0.93 23 0.93 24 0.94 25 0.94 26 0.94 27 0.94 28 0.95 29 0.95 30 0.96 31 0.96 32 0.97 33 0.97 34 0.98 35 0.98 36 1.00 37 1.00 328.42 112.92 22.4 4.65 5.03 2 10.00 35.0 12985.86 0.00 2394.51 333.07 134.12 22.4 5.44 5.88 2 10.00 35.0 15480.04 255.57 2448.65 338.51 127.86 20.2 5.12 5.46 2 10.00 35.0 14852.67 659.16 2542.34 343.64 128.74 20.2 5.12 5.46 2 10.00 35.0 15037.21 1028.14 2582.40 348.76 130.79 17.9 5.19 5.46 2 10.00 35.0 15352.73 1361.58 2645.49 353.95 130.53 17.9 5.19 5.46 2 10.00 35.0 15390.73 1659.07 2658.21 359.14 131.23 15.7 5.25 5.46 2 10.00 35.0 15535.73 1920.80 2692.75 364.40 129.80 15.7 5.25 5.46 2 10.00 35.0 15423.35 2146.13 2677.67 369.65 129.08 13.5 5.31 5.46 2 10.00 35.0 15390.04 2335.50 2682.72 374.96 126.45 13.5 5.31 5.46 2 10.00 35.0 15123.98 2488.65 2639.42 380.26 124.30 11.3 5.35 5.46 2 10.00 35.0 14908.30 2605.39 2614.23 385.62 120.47 11.3 5.35 5.46 2 10.00 35.0 14487.03 2686.09 2542.35 390.97 116.86 9.1 5.39 5.46 2 10.00 35.0 14086.55 2730.15 2486.29 396.36 111.82 9.1 5.39 5.46 2 10.00 35.0 13508.80 2737.91 2385.67 401.75 106.76 6.9 5.42 5.46 2 10.00 35.0 12923.85 2709.16 2297.99 407.17 100.50 6.9 5.42 5.46 2 10.00 35.0 12188.74 2644.14 2167.99 412.58 94.02 4.6 5.44 5.46 2 10.00 35.0 11421.48 2542.71 2047.95 418.02 86.56 4.6 5.44 5.46 2 10.00 35.0 10530.41 2405.01 1888.49 423.46 78.70 2.4 5.45 5.46 2 10.00 35.0 9586.11 2231.09 1735.41 428.92 70.04 2.4 5.45 5.46 2 10.00 35.0 8540.56 2021.07 1546.16 434.37 60.87 0.2 5.46 5.46 2 10.00 35.0 7426.12 1774.79 1359.19 439.83 51.04 0.2 5.46 5.46 2 10.00 35.0 6228.65 1492.43 1140.02 38 1.01 39 1.01 40 1.03 41 1.03 42 1.03 445.28 450.74 456.19 460.31 464.43 40.62 29.66 14.80 7.90 1.43 - 2.0 - 2.0 - 4.2 - 4.2 5.45 5.46 2 10.00 35.0 4953.97 1174.32 5.45 5.46 2 10.00 35.0 3607.98 820.14 4.12 4.13 2 10.00 35.0 1789.38 364.89 4.12 4.13 2 10.00 35.0 937.43 121.63 - 4.2 2.65 2.66 2 10.00 35.0 164.83 0.00 X -S Area: 3434.95 Path Length: 207.39 X -S Weight: 401358.53 918.32 668.97 445.59 234.17 64.48 GALENA 7.2 Analysis Results Version: 7.2.3.05 Licensee: J & T Consulting Project: Sweet Valley Pit File: P:\23038 CCWCD J2 Meining Farm\DRMS Permit\112 Permit\Slope Stability\Galena\S.V. Pit-SS7S-Reclamation.gmf Processed: 04 Mar 2024 14:53:15 DATA: Analysis 1 - SS -7S - Reclamation Slope - Static Material Properties (6 materials) Material: 1 (Mohr -Coulomb Isotropic) - Overburden/Clay Cohesion Phi UnitWeight Ru Unsaturated: 50.00 25.0 100.00 Auto Saturated: 50.00 25.0 115.00 Auto Material: 2 (Mohr -Coulomb Isotropic) - Sand and Gravel Cohesion Phi UnitWeight Ru Unsaturated: 10.00 35.0 115.00 Auto Saturated: 10.00 35.0 130.00 Auto Material: 3 (Mohr -Coulomb Isotropic) - Stable Claystone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 120.00 Auto Saturated: 3000.00 0.0 135.00 Auto Material: 4 (Mohr -Coulomb Isotropic) - Stable Siltstone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 117.00 Auto Saturated: 3000.00 0.0 133.00 Auto Material: 5 (Mohr -Coulomb Isotropic) - Stable Sandstone Bedrock Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 115.00 Auto Saturated: 3000.00 0.0 128.00 Auto Material: 6 (Mohr -Coulomb Isotropic) - Slurry Wall Cohesion Phi UnitWeight Ru Unsaturated: 0.00 45.0 100.00 Auto Saturated: 0.00 45.0 110.00 Auto Water Properties Unit weight of water: 62.400 Unit weight of water/medium above ground: 62.400 Material Profiles (5 profiles) Profile: 1 (12 points) Material beneath: 1 - Overburden/Clay 176.28 4752.00 190.05 4756.72 202.90 4761.00 222.90 4761.02 235.88 4756.69 260.00 4758.00 274.00 4757.98 280.30 4756.02 285.75 4754.54 291.85 4754.07 297.25 4755.96 319.91 4757.00 Profile: 2 (2 points) Material beneath: 6 - Slurry Wall 203.03 4756.71 206.03 4756.71 Profile: 3 (3 points) Material beneath: 2 - Sand and Gravel 17.19 4698.97 176.28 4752.00 203.03 4752.00 Profile: 4 (2 points) Material beneath: 2 - Sand and Gravel 206.03 4752.00 319.91 4752.00 Profile: 5 (4 points) Material beneath: 4 - Stable Siltstone Bedrock 0.00 4698.97 17.19 4698.97 204.50 4698.95 319.91 4698.95 Slope Surface (14 points) 0.00 4698.97 17.19 4698.97 176.28 4752.00 190.05 4756.72 202.90 4761.00 222.90 4761.02 235.88 4756.69 260.00 4758.00 274.00 4757.98 280.30 4756.02 285.75 4754.54 291.85 4754.07 297.25 4755.96 319.91 4757.00 Phreatic Surface (5 points) 0.00 4698.97 17.19 4698.97 203.03 4730.50 206.03 4731.50 319.91 4731.50 Failure Surface Initial circular surface for critical search defined by: XL,XR,R Intersects: XL: 17.19 YL: 4698.97 XR: 274.00 YR: Centre: XC: 61.02 YC: 5096.56 Radius: R: Variable Restraints Parameter descriptor: XL XR R Range of variation: 10.00 10.00 350.00 Trial positions within range: 20 20 50 RESULTS: Analysis 1 - SS -7S - Reclamation Slope - Static Bishop Simplified Method of Analysis - Circular Failure Surface 4757.98 400.00 Critical Failure Surface Search using Multiple Circle Generation Techniques Initial failure surface approximation - Factor of Safety: 3.571 Analysis Summary There were: 19745 successful analyses from a total of 20001 trial failure surfaces 256 analyses terminated due to unacceptable geometry Critical (minimum) Factor of Safety: 2.53 Results Summary - Lowest 99 Factor of Safety circles Circle X -Left Y -Left X -Right Y -Right X -Centre Y -Centre Radius FoS 1 21.14 4700.29 269.00 4757.99 54.83 5116.78 417.86 2.531 <-- Critical Surface 2 21.66 4700.46 269.00 4757.99 56.85 5109.67 410.71 2.532 3 22.19 4700.64 269.00 4757.99 58.87 5102.54 403.57 2.532 4 20.08 4699.94 269.00 4757.99 49.08 5138.26 439.29 2.536 5 20.61 4700.11 269.00 4757.99 51.11 5131.18 432.14 2.537 6 21.14 4700.29 269.00 4757.99 53.13 5124.08 425.00 2.538 7 21.66 4700.46 269.00 4757.99 55.15 5116.97 417.86 2.538 8 22.19 4700.64 269.00 4757.99 57.17 5109.86 410.71 2.539 9 20.61 4700.11 269.53 4757.99 51.58 5131.14 432.14 2.540 10 21.14 4700.29 269.53 4757.99 53.60 5124.04 425.00 2.541 11 21.66 4700.46 269.53 4757.99 55.61 5116.94 417.86 2.542 12 19.56 4699.76 269.00 4757.99 45.37 5152.60 453.57 2.542 13 22.19 4700.64 269.53 4757.99 57.63 5109.82 410.71 2.542 14 20.08 4699.94 269.00 4757.99 47.39 5145.53 446.43 2.543 15 20.61 4700.11 269.00 4757.99 49.41 5138.45 439.29 2.544 16 20.61 4700.11 270.05 4757.99 52.05 5131.11 432.14 2.544 17 21.14 4700.29 269.00 4757.99 51.43 5131.37 432.14 2.544 18 21.14 4700.29 270.05 4757.99 54.06 5124.01 425.00 2.545 19 21.66 4700.46 269.00 4757.99 53.45 5124.27 425.00 2.545 20 19.56 4699.76 269.53 4757.99 45.85 5152.57 453.57 2.545 21 21.66 4700.46 270.05 4757.99 56.08 5116.90 417.86 2.545 22 22.19 4700.64 269.00 4757.99 55.47 5117.17 417.86 2.546 23 18.51 4699.41 269.00 4757.99 39.63 5173.94 475.00 2.546 24 22.19 4700.64 270.05 4757.99 58.09 5109.78 410.71 2.546 25 20.08 4699.94 269.53 4757.99 47.87 5145.50 446.43 2.546 26 19.03 4699.58 269.00 4757.99 41.66 5166.89 467.86 2.547 27 20.61 4700.11 269.53 4757.99 49.88 5138.42 439.29 2.547 28 21.14 4700.29 269.53 4757.99 51.90 5131.33 432.14 2.548 29 19.56 4699.76 269.00 4757.99 43.68 5159.84 460.71 2.548 30 21.14 4700.29 270.58 4757.98 54.53 5123.97 425.00 2.548 31 19.56 4699.76 270.05 4757.99 46.33 5152.54 453.57 2.548 32 21.66 4700.46 269.53 4757.99 53.92 5124.24 425.00 2.548 33 21.66 4700.46 270.58 4757.98 56.54 5116.86 417.86 2.549 34 22.19 4700.64 269.53 4757.99 55.94 5117.13 417.86 2.549 35 20.08 4699.94 269.00 4757.99 45.70 5152.78 453.57 2.549 36 22.19 4700.64 270.58 4757.98 58.55 5109.74 410.71 2.549 37 20.08 4699.94 270.05 4757.99 48.34 5145.47 446.43 2.549 38 19.03 4699.58 269.53 4757.99 42.14 5166.87 467.86 2.550 39 20.61 4700.11 269.00 4757.99 47.72 5145.72 446.43 2.550 40 20.61 4700.11 270.05 4757.99 50.36 5138.39 439.29 2.550 41 21.14 4700.29 269.00 4757.99 49.74 5138.64 439.29 2.551 42 19.56 4699.76 269.53 4757.99 44.16 5159.82 460.71 2.551 43 21.14 4700.29 270.05 4757.99 52.37 5131.30 432.14 2.551 44 21.14 4700.29 271.11 4757.98 54.99 5123.94 425.00 2.551 45 21.66 4700.46 269.00 4757.99 51.76 5131.56 432.14 2.552 46 21.66 4700.46 270.05 4757.99 54.39 5124.20 425.00 2.552 47 18.51 4699.41 269.00 4757.99 37.94 5181.16 482.14 2.552 48 21.66 4700.46 271.11 4757.98 57.00 5116.82 417.86 2.552 49 22.19 4700.64 269.00 4757.99 53.78 5124.46 425.00 2.552 50 20.08 4699.94 269.53 4757.99 46.18 5152.76 453.57 2.553 51 22.19 4700.64 270.05 4757.99 56.40 5117.09 417.86 2.553 52 20.08 4699.94 270.58 4757.98 48.82 5145.44 446.43 2.553 53 22.19 4700.64 271.11 4757.98 59.01 5109.70 410.71 2.553 54 19.03 4699.58 270.05 4757.99 42.62 5166.85 467.86 2.553 55 19.03 4699.58 269.00 4757.99 39.97 5174.12 475.00 2.553 56 20.61 4700.11 269.53 4757.99 48.20 5145.69 446.43 2.554 57 20.61 4700.11 270.58 4757.98 50.83 5138.36 439.29 2.554 58 21.14 4700.29 269.53 4757.99 50.21 5138.61 439.29 2.554 59 19.56 4699.76 269.00 4757.99 41.99 5167.08 467.86 2.554 60 21.14 4700.29 270.58 4757.98 52.84 5131.26 432.14 2.555 61 19.56 4699.76 270.05 4757.99 44.64 5159.79 460.71 2.555 62 21.66 4700.46 269.53 4757.99 52.23 5131.52 432.14 2.555 63 20.08 4699.94 269.00 4757.99 44.01 5160.03 460.71 2.555 64 21.66 4700.46 270.58 4757.98 54.85 5124.16 425.00 2.555 65 18.51 4699.41 269.53 4757.99 38.44 5181.14 482.14 2.555 66 22.19 4700.64 269.53 4757.99 54.24 5124.43 425.00 2.556 67 20.08 4699.94 270.05 4757.99 46.66 5152.73 453.57 2.556 68 22.19 4700.64 270.58 4757.98 56.86 5117.05 417.86 2.556 69 20.08 4699.94 271.11 4757.98 49.29 5145.41 446.43 2.556 70 20.61 4700.11 269.00 4757.99 46.03 5152.97 453.57 2.556 71 19.03 4699.58 269.53 4757.99 40.46 5174.10 475.00 2.557 72 20.61 4700.11 270.05 4757.99 48.67 5145.66 446.43 2.557 73 20.61 4700.11 271.11 4757.98 51.30 5138.32 439.29 2.557 74 19.03 4699.58 270.58 4757.98 43.11 5166.82 467.86 2.558 75 17.98 4699.23 269.00 4757.99 34.23 5195.40 496.43 2.558 76 19.56 4699.76 269.53 4757.99 42.47 5167.06 467.86 2.558 77 21.14 4700.29 269.00 4757.99 48.05 5145.90 446.43 2.558 78 21.14 4700.29 270.05 4757.99 50.68 5138.58 439.29 2.558 79 21.14 4700.29 271.11 4757.98 53.31 5131.23 432.14 2.558 80 19.56 4699.76 270.58 4757.98 45.12 5159.76 460.71 2.558 81 21.66 4700.46 269.00 4757.99 50.07 5138.83 439.29 2.558 82 20.08 4699.94 269.53 4757.99 44.49 5160.00 460.71 2.559 83 21.66 4700.46 270.05 4757.99 52.70 5131.49 432.14 2.559 84 18.51 4699.41 270.05 4757.99 38.92 5181.12 482.14 2.559 85 18.51 4699.41 269.00 4757.99 36.26 5188.37 489.29 2.559 86 21.66 4700.46 271.11 4757.98 55.32 5124.13 425.00 2.559 87 22.19 4700.64 269.00 4757.99 52.08 5131.74 432.14 2.559 88 20.08 4699.94 270.58 4757.98 47.13 5152.70 453.57 2.559 89 22.19 4700.64 270.05 4757.99 54.71 5124.39 425.00 2.559 90 20.61 4700.11 269.53 4757.99 46.51 5152.94 453.57 2.559 91 19.03 4699.58 270.05 4757.99 40.94 5174.08 475.00 2.560 92 19.03 4699.58 269.00 4757.99 38.28 5181.34 482.14 2.560 93 22.19 4700.64 271.11 4757.98 57.33 5117.01 417.86 2.560 94 20.61 4700.11 270.58 4757.98 49.15 5145.63 446.43 2.560 95 20.61 4700.11 271.63 4757.98 51.77 5138.29 439.29 2.561 96 19.56 4699.76 270.05 4757.99 42.96 5167.03 467.86 2.561 97 19.56 4699.76 269.00 4757.99 40.30 5174.31 475.00 2.561 98 21.14 4700.29 269.53 4757.99 48.52 5145.87 446.43 2.561 99 21.14 4700.29 270.58 4757.98 51.16 5138.54 439.29 2.561 Critical Failure Surface (circle 1) Intersects: XL: 21.14 YL: 4700.29 XR: 269.00 YR: 4757.99 Centre: XC: 54.83 YC: 5116.78 Radius: R: 417.86 Generated failure surface: (20 points) 21.14 4700.29 34.72 4699.41 48.32 4698.98 61.93 4698.99 4699.44 89.11 4700.33 102.66 4701.67 116.15 4703.45 129.58 4705.67 4708.32 156.18 4711.41 169.33 4714.92 182.36 4718.86 195.25 4723.23 4728.01 220.57 4733.20 232.97 4738.80 245.19 4744.81 257.20 4751.20 4757.99 Slice Geometry and Properties - Critical Failure Surface (circle 1, 45 slices) Slice Test X -S Base 75.53 142.93 207.99 269.00 PoreWater Normal X -Left Area Angle Width Length Matl Cohesion Phi Weight Force Stress Factor 1 21.14 1.51 -3.7 2.76 2.77 2 10.00 35.0 174.18 0.00 64.52 1.02 2 23.90 11.77 -3.7 5.41 5.42 2 10.00 35.0 1404.43 214.44 263.81 1.02 3 29.31 23.41 -3.7 5.41 5.42 2 10.00 35.0 2846.58 643.15 533.74 1.02 4 34.72 45.20 -1.8 6.80 6.80 2 10.00 35.0 5525.92 1366.97 818.03 1.01 5 41.52 62.09 -1.8 6.80 6.80 2 10.00 35.0 7608.61 1949.17 1126.21 1.01 6 48.32 78.27 0.0 6.80 6.80 2 10.00 35.0 9598.49 2484.09 1410.32 1.00 7 55.13 93.68 0.0 6.80 6.80 2 10.00 35.0 11487.33 2972.37 1687.85 1.00 8 61.93 108.26 1.9 6.80 6.80 2 10.00 35.0 13270.13 3413.42 1937.78 0.99 9 68.73 122.14 1.9 6.80 6.80 2 10.00 35.0 14960.72 3807.16 2184.61 0.99 10 75.53 135.03 3.8 6.79 6.80 2 10.00 35.0 16524.68 4153.35 2400.71 0.98 11 82.32 147.36 3.8 6.79 6.80 2 10.00 35.0 18014.48 4452.75 2616.98 0.98 12 89.11 158.49 5.6 6.77 6.80 2 10.00 35.0 19351.95 4704.06 2799.66 0.98 13 95.89 169.25 5.6 6.77 6.80 2 10.00 35.0 20637.31 4907.87 2985.21 0.98 14 102.66 178.56 7.5 6.75 6.80 2 10.00 35.0 21741.27 5064.00 3134.88 0.97 15 109.40 187.73 7.5 6.75 6.80 2 10.00 35.0 22821.82 5172.59 3290.02 0.97 16 116.15 195.19 9.4 6.71 6.80 2 10.00 35.0 23687.61 5233.40 3406.94 0.97 17 122.87 202.77 9.4 6.71 6.80 2 10.00 35.0 24563.12 5246.60 3531.79 0.97 18 129.58 208.34 11.2 6.67 6.80 2 10.00 35.0 25188.35 5212.01 3616.40 0.97 19 136.25 214.34 11.2 6.67 6.80 2 10.00 35.0 25858.92 5129.70 3711.01 0.97 20 142.93 218.03 13.1 6.63 6.80 2 10.00 35.0 26244.03 4999.79 3763.71 0.96 21 149.56 222.45 13.1 6.63 6.80 2 10.00 35.0 26710.37 4822.09 3828.24 0.96 22 0.96 23 0.96 24 0.96 25 0.96 26 0.97 27 0.97 28 0.97 29 0.93 30 0.97 31 0.97 32 0.97 33 0.97 34 0.98 35 0.98 36 0.98 37 0.98 38 0.98 39 0.98 40 0.99 41 0.99 42 1.00 43 1.04 156.18 162.76 169.33 176.28 182.36 190.05 195.25 202.90 206.03 207.99 212.22 216.45 220.57 222.90 227.94 232.97 235.88 240.53 245.19 251.20 257.20 258.59 224.25 227.10 242.30 213.32 271.05 183.19 268.28 107.41 65.42 135.80 128.44 118.24 63.58 124.85 104.93 51.31 71.87 62.40 65.79 48.54 8.71 7.85 15.0 6.57 15.0 6.57 16.8 16.8 18.7 18.7 20.6 20.6 20.6 22.4 22.4 22.4 24.3 24.3 24.3 26.2 26.2 26.2 28.0 28.0 29.9 29.9 6.95 6.08 7.69 5.20 7.65 3.13 1.96 4.23 4.23 4.12 2.33 5.04 5.04 2.91 4.65 4.65 6.01 6.01 1.39 1.41 6.80 2 10.00 35.0 26856.66 4596.82 6.80 2 10.00 35.0 27121.15 4323.98 7.26 2 10.00 35.0 28843.90 4258.34 6.35 2 10.00 35.0 25214.29 3381.35 8.12 2 10.00 35.0 31641.15 3790.29 5.49 2 10.00 35.0 21130.01 2188.89 8.17 2 10.00 35.0 30558.05 2634.40 3.34 6 0.00 45.0 10875.10 895.48 2.09 2 10.00 35.0 7371.54 504.23 4.57 2 10.00 35.0 15212.32 747.16 4.57 2 10.00 35.0 14254.67 249.02 4.46 2 10.00 35.0 13039.67 0.00 2.56 2 10.00 35.0 6996.01 0.00 5.53 2 10.00 35.0 13740.26 0.00 5.53 2 10.00 35.0 11576.42 0.00 3.24 2 10.00 35.0 5674.88 0.00 5.19 2 10.00 35.0 7928.56 0.00 5.19 2 10.00 35.0 6822.08 0.00 6.80 2 10.00 35.0 7082.93 0.00 6.80 2 10.00 35.0 5069.68 0.00 1.60 2 10.00 35.0 879.15 0.00 1.63 1 50.00 25.0 784.54 0.00 3849.50 3884.20 3874.51 3868.19 3799.85 3749.29 3647.20 3060.35 3427.18 3245.01 3030.44 2835.60 2668.04 2423.26 2041.45 1717.50 1497.81 1288.57 1025.98 733.84 545.36 492.04 44 260.00 17.51 29.9 4.50 5.19 1 50.00 25.0 1750.72 1.04 45 264.50 5.84 29.9 4.50 5.19 1 50.00 25.0 583.61 1.04 X -S Area: 5601.83 Path Length: 258.59 X -S Weight: 659227.81 0.00 341.52 0.00 106.99 GALENA 7.2 Analysis Results Version: 7.2.3.05 Licensee: J & T Consulting Project: Sweet Valley Pit File: P:\23038 CCWCD J2 Meining Farm\DRMS Permit\112 Permit\Slope Stability\Gal...\S.V. Pit-SS7S-Reclamation- Pseudo Static.gmf Processed: 04 Mar 2024 14:56:13 DATA: Analysis 1 - SS -7S - Reclamation Slope - Pseudo Static Material Properties (6 materials) Material: 1 (Mohr -Coulomb Isotropic) - Overburden/Clay Cohesion Phi UnitWeight Ru Unsaturated: 50.00 25.0 100.00 Auto Saturated: 50.00 25.0 115.00 Auto Material: 2 (Mohr -Coulomb Isotropic) - Sand and Gravel Cohesion Phi UnitWeight Ru Unsaturated: 10.00 35.0 115.00 Auto Saturated: 10.00 35.0 130.00 Auto Material: 3 (Mohr -Coulomb Isotropic) - Stable Claystone Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 120.00 Auto Saturated: 3000.00 0.0 135.00 Auto Material: 4 (Mohr -Coulomb Isotropic) - Stable Siltstone Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 117.00 Auto Saturated: 3000.00 0.0 133.00 Auto Material: 5 (Mohr -Coulomb Isotropic) - Stable Sandstone Cohesion Phi UnitWeight Ru Unsaturated: 3000.00 0.0 115.00 Auto Saturated: 3000.00 0.0 128.00 Auto Material: 6 (Mohr -Coulomb Isotropic) - Slurry Wall Cohesion Phi UnitWeight Ru Unsaturated: 0.00 45.0 100.00 Auto Saturated: 0.00 45.0 110.00 Auto Water Properties Bedrock Bedrock Bedrock Unit weight of water: 62.400 Unit weight of water/medium above ground: 62.400 Material Profiles (5 profiles) Profile: 1 (12 points) 176.28 4752.00 4756.69 260.00 4758.00 4754.07 297.25 4755.96 Profile: 2 (2 points) 203.03 4756.71 Profile: 3 (3 points) 17.19 4698.97 Profile: 4 (2 points) 206.03 4752.00 Profile: 5 (4 points) 0.00 4698.97 Slope Surface (14 points) 0.00 4698.97 4761.00 222.90 4761.02 4756.02 285.75 4754.54 Material beneath: 1 - Overburden/Clay 190.05 4756.72 202.90 274.00 4757.98 4761.00 280.30 4756.02 319.91 4757.00 Material beneath: 6 - Slurry Wall 206.03 4756.71 Material beneath: 2 - Sand and Gravel 176.28 4752.00 203.03 4752.00 Material beneath: 2 - Sand and Gravel 319.91 4752.00 Material beneath: 4 - Stable Siltstone Bedrock 17.19 4698.97 204.50 4698.95 Phreatic Surface (5 points) 0.00 4731.50 Failure Surface 4698.97 17.19 235.88 291.85 4698.97 4756.69 4754.07 17.19 4698.97 176.28 260.00 297.25 4752.00 4758.00 4755.96 203.03 4730.50 Initial circular surface for critical search defined by: XL,XR,R Intersects: XL: 17.19 YL: 4698.97 XR: 274.00 YR: Centre: XC: 61.02 YC: 5096.56 Radius: R: Earthquake Force Pseudo -static earthquake (seismic) coefficient: 0.070 Variable Restraints Parameter descriptor: Range of variation: Trial positions within range: XL 10.00 20 XR 10.00 20 R 350.00 50 222.90 4761.02 235.88 285.75 4754.54 319.91 4698.95 190.05 4756.72 274.00 4757.98 319.91 4757.00 206.03 4731.50 4757.98 400.00 291.85 202.90 280.30 319.91 RESULTS: Analysis 1 - SS -7S - Reclamation Slope - Pseudo Static Bishop Simplified Method of Analysis - Circular Failure Surface Critical Failure Surface Search using Multiple Circle Generation Techniques Initial failure surface approximation - Factor of Safety: 2.748 Analysis Summary There were: 19745 successful analyses from a total of 20001 trial failure surfaces 256 analyses terminated due to unacceptable geometry Critical (minimum) Factor of Safety: 1.93 Results Summary - Lowest 99 Factor of Safety circles Circle X -Left Y -Left X -Right Y -Right X -Centre Y -Centre Radius FoS 1 21.14 4700.29 269.00 4757.99 54.83 5116.78 417.86 1.935 <-- Critical Surface 2 21.66 4700.46 269.00 4757.99 56.85 5109.67 410.71 1.935 3 22.19 4700.64 269.00 4757.99 58.87 5102.54 403.57 1.935 4 20.08 4699.94 269.00 4757.99 49.08 5138.26 439.29 1.939 5 20.61 4700.11 269.00 4757.99 51.11 5131.18 432.14 1.939 6 21.14 4700.29 269.00 4757.99 53.13 5124.08 425.00 1.940 7 21.66 4700.46 269.00 4757.99 55.15 5116.97 417.86 1.940 8 22.19 4700.64 269.00 4757.99 57.17 5109.86 410.71 1.940 9 20.61 4700.11 269.53 4757.99 51.58 5131.14 432.14 1.941 10 21.14 4700.29 269.53 4757.99 53.60 5124.04 425.00 1.941 11 21.66 4700.46 269.53 4757.99 55.61 5116.94 417.86 1.942 12 22.19 4700.64 269.53 4757.99 57.63 5109.82 410.71 1.942 13 20.61 4700.11 270.05 4757.99 52.05 5131.11 432.14 1.943 14 21.14 4700.29 270.05 4757.99 54.06 5124.01 425.00 1.943 15 21.66 4700.46 270.05 4757.99 56.08 5116.90 417.86 1.943 16 22.19 4700.64 270.05 4757.99 58.09 5109.78 410.71 1.943 17 19.56 4699.76 269.00 4757.99 45.37 5152.60 453.57 1.944 18 20.08 4699.94 269.00 4757.99 47.39 5145.53 446.43 1.944 19 20.61 4700.11 269.00 4757.99 49.41 5138.45 439.29 1.944 20 21.14 4700.29 270.58 4757.98 54.53 5123.97 425.00 1.945 21 21.14 4700.29 269.00 4757.99 51.43 5131.37 432.14 1.945 22 21.66 4700.46 270.58 4757.98 56.54 5116.86 417.86 1.945 23 21.66 4700.46 269.00 4757.99 53.45 5124.27 425.00 1.945 24 22.19 4700.64 270.58 4757.98 58.55 5109.74 410.71 1.945 25 19.56 4699.76 269.53 4757.99 45.85 5152.57 453.57 1.945 26 22.19 4700.64 269.00 4757.99 55.47 5117.17 417.86 1.945 27 20.08 4699.94 269.53 4757.99 47.87 5145.50 446.43 1.946 28 20.61 4700.11 269.53 4757.99 49.88 5138.42 439.29 1.946 29 21.14 4700.29 271.11 4757.98 54.99 5123.94 425.00 1.946 30 21.14 4700.29 269.53 4757.99 51.90 5131.33 432.14 1.946 31 21.66 4700.46 271.11 4757.98 57.00 5116.82 417.86 1.947 32 21.66 4700.46 269.53 4757.99 53.92 5124.24 425.00 1.947 33 19.56 4699.76 270.05 4757.99 46.33 5152.54 453.57 1.947 34 22.19 4700.64 269.53 4757.99 55.94 5117.13 417.86 1.947 35 22.19 4700.64 271.11 4757.96 59.01 5109.70 410.71 1.947 36 20.08 4699.94 270.05 4757.99 48.34 5145.47 446.43 1.947 37 18.51 4699.41 269.00 4757.99 39.63 5173.94 475.00 1.947 38 20.61 4700.11 270.05 4757.99 50.36 5138.39 439.29 1.948 39 19.03 4699.58 269.00 4757.99 41.66 5166.89 467.86 1.948 40 21.14 4700.29 270.05 4757.99 52.37 5131.30 432.14 1.948 41 19.56 4699.76 269.00 4757.99 43.68 5159.84 460.71 1.948 42 21.66 4700.46 270.05 4757.99 54.39 5124.20 425.00 1.948 43 22.19 4700.64 270.05 4757.99 56.40 5117.09 417.86 1.949 44 20.08 4699.94 270.58 4757.98 48.82 5145.44 446.43 1.949 45 20.08 4699.94 269.00 4757.99 45.70 5152.78 453.57 1.949 46 20.61 4700.11 270.58 4757.98 50.83 5138.36 439.29 1.949 47 19.03 4699.58 269.53 4757.99 42.14 5166.87 467.86 1.949 48 20.61 4700.11 269.00 4757.99 47.72 5145.72 446.43 1.950 49 21.14 4700.29 270.58 4757.98 52.84 5131.26 432.14 1.950 50 19.56 4699.76 269.53 4757.99 44.16 5159.82 460.71 1.950 51 21.14 4700.29 269.00 4757.99 49.74 5138.64 439.29 1.950 52 21.66 4700.46 270.58 4757.98 54.85 5124.16 425.00 1.950 53 21.66 4700.46 269.00 4757.99 51.76 5131.56 432.14 1.950 54 22.19 4700.64 270.58 4757.98 56.86 5117.05 417.86 1.950 55 20.08 4699.94 271.11 4757.98 49.29 5145.41 446.43 1.950 56 22.19 4700.64 269.00 4757.99 53.78 5124.46 425.00 1.950 57 20.08 4699.94 269.53 4757.99 46.18 5152.76 453.57 1.951 58 19.03 4699.58 270.05 4757.99 42.62 5166.85 467.86 1.951 59 20.61 4700.11 271.11 4757.98 51.30 5138.32 439.29 1.951 60 20.61 4700.11 269.53 4757.99 48.20 5145.69 446.43 1.951 61 21.14 4700.29 271.11 4757.98 53.31 5131.23 432.14 1.951 62 21.14 4700.29 269.53 4757.99 50.21 5138.61 439.29 1.951 63 21.66 4700.46 271.11 4757.98 55.32 5124.13 425.00 1.952 64 19.56 4699.76 270.05 4757.99 44.64 5159.79 460.71 1.952 65 21.66 4700.46 269.53 4757.99 52.23 5131.52 432.14 1.952 66 22.19 4700.64 271.11 4757.98 57.33 5117.01 417.86 1.952 67 22.19 4700.64 269.53 4757.99 54.24 5124.43 425.00 1.952 68 18.51 4699.41 269.00 4757.99 37.94 5181.16 482.14 1.952 69 20.08 4699.94 270.05 4757.99 46.66 5152.73 453.57 1.952 70 20.61 4700.11 271.63 4757.98 51.77 5138.29 439.29 1.953 71 20.61 4700.11 270.05 4757.99 48.67 5145.66 446.43 1.953 72 19.03 4699.58 269.00 4757.99 39.97 5174.12 475.00 1.953 73 19.03 4699.58 270.58 4757.98 43.11 5166.82 467.86 1.953 74 21.14 4700.29 271.63 4757.98 53.78 5131.19 432.14 1.953 75 21.14 4700.29 270.05 4757.99 50.68 5138.58 439.29 1.953 76 19.56 4699.76 270.58 4757.98 45.12 5159.76 460.71 1.953 77 19.56 4699.76 269.00 4757.99 41.99 5167.08 467.86 1.953 78 21.66 4700.46 271.63 4757.98 55.78 5124.09 425.00 1.953 79 21.66 4700.46 270.05 4757.99 52.70 5131.49 432.14 1.953 80 18.51 4699.41 269.53 4757.99 38.44 5181.14 482.14 1.954 81 22.19 4700.64 270.05 4757.99 54.71 5124.39 425.00 1.954 82 20.08 4699.94 269.00 4757.99 44.01 5160.03 460.71 1.954 83 22.19 4700.64 271.63 4757.98 57.79 5116.98 417.86 1.954 84 20.08 4699.94 270.58 4757.98 47.13 5152.70 453.57 1.954 85 20.61 4700.11 269.00 4757.99 46.03 5152.97 453.57 1.954 86 20.61 4700.11 272.16 4757.98 52.24 5138.26 439.29 1.954 87 20.61 4700.11 270.58 4757.98 49.15 5145.63 446.43 1.954 88 19.03 4699.58 269.53 4757.99 40.46 5174.10 475.00 1.954 89 21.14 4700.29 272.16 4757.98 54.24 5131.16 432.14 1.955 90 21.14 4700.29 270.58 4757.98 51.16 5138.54 439.29 1.955 91 19.56 4699.76 269.53 4757.99 42.47 5167.06 467.86 1.955 92 19.56 4699.76 271.11 4757.98 45.60 5159.74 460.71 1.955 93 21.14 4700.29 269.00 4757.99 48.05 5145.90 446.43 1.955 94 21.66 4700.46 270.58 4757.98 53.17 5131.45 432.14 1.955 95 21.66 4700.46 272.16 4757.98 56.25 5124.05 425.00 1.955 96 18.51 4699.41 270.05 4757.99 38.92 5181.12 482.14 1.955 97 20.08 4699.94 269.53 4757.99 44.49 5160.00 460.71 1.955 98 21.66 4700.46 269.00 4757.99 50.07 5138.83 439.29 1.955 99 22.19 4700.64 270.58 4757.98 55.18 5124.35 425.00 1.955 Critical Failure Surface (circle 1) Intersects: XL: 21.14 YL: 4700.29 XR: 269.00 YR: 4757.99 Centre: XC: 54.83 YC: 5116.78 Radius: R: 417.86 Generated failure surface: (20 points) 21.14 4700.29 34.72 4699.41 48.32 4698.98 61.93 4698.99 4699.44 89.11 4700.33 102.66 4701.67 116.15 4703.45 129.58 4705.67 4708.32 156.18 4711.41 169.33 4714.92 182.36 4718.86 195.25 4723.23 4728.01 75.53 142.93 207.99 220.57 4757.99 4733.20 232.97 4738.80 245.19 4744.81 257.20 4751.20 269.00 Slice Geometry and Properties - Critical Failure Surface (circle 1, 45 slices) Slice X -S Base PoreWater Normal Test X -Left Area Angle Width Length Matl Cohesion Phi Weight Force Stress Factor 1 21.14 1.51 -3.7 2.76 2.77 2 10.00 35.0 174.18 0.00 64.97 1.03 2 23.90 11.77 -3.7 5.41 5.42 2 10.00 35.0 1404.43 214.44 265.15 1.03 3 29.31 23.41 -3.7 5.41 5.42 2 10.00 35.0 2846.58 643.15 536.16 1.03 4 34.72 45.20 -1.8 6.80 6.80 2 10.00 35.0 5525.92 1366.97 819.77 1.01 5 41.52 62.09 -1.8 6.80 6.80 2 10.00 35.0 7608.61 1949.17 1128.56 1.01 6 48.32 78.27 0.0 6.80 6.80 2 10.00 35.0 9598.49 2484.09 1410.26 1.00 7 55.13 93.68 0.0 6.80 6.80 2 10.00 35.0 11487.33 2972.37 1687.77 1.00 8 61.93 108.26 1.9 6.80 6.80 2 10.00 35.0 13270.13 3413.42 1933.71 0.99 9 68.73 122.14 1.9 6.80 6.80 2 10.00 35.0 14960.72 3807.16 2180.00 0.99 10 75.53 135.03 3.8 6.79 6.80 2 10.00 35.0 16524.68 4153.35 2390.80 0.98 11 82.32 147.36 3.8 6.79 6.80 2 10.00 35.0 18014.48 4452.75 2606.12 0.98 12 89.11 158.49 5.6 6.77 6.80 2 10.00 35.0 19351.95 4704.06 2782.39 0.97 13 95.89 169.25 5.6 6.77 6.80 2 10.00 35.0 20637.31 4907.87 2966.68 0.97 14 102.66 178.56 7.5 6.75 6.80 2 10.00 35.0 21741.27 5064.00 3109.07 0.96 15 109.40 187.73 7.5 6.75 6.80 2 10.00 35.0 22821.82 5172.59 3262.74 0.96 16 116.15 195.19 9.4 6.71 6.80 2 10.00 35.0 23687.61 5233.40 3371.70 0.96 17 122.87 202.77 9.4 6.71 6.80 2 10.00 35.0 24563.12 5246.60 3494.93 0.96 18 129.58 208.34 11.2 6.67 6.80 2 10.00 35.0 25188.35 5212.01 3571.11 0.95 19 136.25 214.34 11.2 6.67 6.80 2 10.00 35.0 25858.92 5129.70 3664.03 0.95 20 142.93 218.03 13.1 6.63 6.80 2 10.00 35.0 26244.03 4999.79 3707.97 0.95 21 149.56 222.45 13.1 6.63 6.80 2 10.00 35.0 26710.37 4822.09 3770.84 0.95 22 156.18 224.25 15.0 6.57 6.80 2 10.00 35.0 26856.66 4596.82 3783.20 0.94 23 162.76 227.10 15.0 6.57 6.80 2 10.00 35.0 27121.15 4323.98 3816.34 0.94 24 169.33 242.30 16.8 6.95 7.26 2 10.00 35.0 28843.90 4258.34 3797.68 0.94 25 176.28 213.32 16.8 6.08 6.35 2 10.00 35.0 25214.29 3381.35 3790.25 0.94 26 182.36 271.05 18.7 7.69 8.12 2 10.00 35.0 31641.15 3790.29 3713.74 0.94 27 190.05 183.19 18.7 5.20 5.49 2 10.00 35.0 21130.01 2188.89 3662.72 0.94 28 195.25 268.28 20.6 7.65 8.17 2 10.00 35.0 30558.05 2634.40 3553.10 0.94 29 202.90 107.41 20.6 3.13 3.34 6 0.00 45.0 10875.10 895.48 2953.42 0.89 30 206.03 65.42 20.6 1.96 2.09 2 10.00 35.0 7371.54 504.23 3336.98 0.94 31 207.99 135.80 22.4 4.23 4.57 2 10.00 35.0 15212.32 747.16 3150.17 0.94 32 212.22 128.44 22.4 4.23 4.57 2 10.00 35.0 14254.67 249.02 2938.81 0.94 33 216.45 118.24 22.4 4.12 4.46 2 10.00 35.0 13039.67 0.00 2748.29 0.94 34 220.57 63.58 24.3 2.33 2.56 2 10.00 35.0 6996.01 0.00 2579.26 0.94 35 222.90 124.85 24.3 5.04 5.53 2 10.00 35.0 13740.26 0.00 2342.55 0.94 36 227.94 104.93 24.3 5.04 5.53 2 10.00 35.0 11576.42 0.00 1973.39 0.94 37 232.97 51.31 26.2 2.91 3.24 2 10.00 35.0 5674.86 0.00 1655.89 0.95 38 235.88 71.87 26.2 4.65 5.19 2 10.00 35.0 7928.56 0.00 1443.99 0.95 39 240.53 62.40 26.2 4.65 5.19 2 10.00 35.0 6822.08 0.00 1242.21 0.95 40 245.19 65.79 28.0 6.01 6.80 2 10.00 35.0 7082.93 0.00 986.37 0.95 41 251.20 48.54 28.0 6.01 6.80 2 10.00 35.0 5069.68 0.00 705.35 0.95 42 257.20 8.71 29.9 1.39 1.60 2 10.00 35.0 879.15 0.00 522.64 0.95 43 258.59 7.85 29.9 1.41 1.63 1 50.00 25.0 784.54 0.00 474.85 1.01 44 260.00 17.51 29.9 4.50 5.19 1 50.00 25.0 1750.72 0.00 328.65 1.01 45 264.50 5.84 29.9 4.50 5.19 1 50.00 25.0 583.61 0.00 100.85 1.01 X -S Area: 5601.83 Path Length: 258.59 X -S Weight: 659227.81 APPENDIX D IL1 J&T Consulting, Inc. Central Colorado Water Conservancy District — Sweet Valley Pit Slope Stability Analysis Gilcrest\ACAD\23.3058 Meining Site Fgures.dwg 1/16/2024 1:33 PM W:\2023\Frederick\23.3058.A Meining Site Slur PROJECT NAME Meining Site, Gilcrest PROJECT NUMBER 23.3058 BORING LOCATION See Figure 2 BORING ELEVATION 4759.5 ft. DRILLING COMPANY/RIG Dakota Drilling/CME 75 CMT REP. E. Castle DRILLING METHOD 8.25in. Diameter HSA DATE STARTED 12/11/2023 HAMMER SYSTEM Automatic Hammer DATE COMPLETED 12/11/2023 JT _N i I V 1 Page 1 of 2 BLOW COUNT SAMPLE GRAPHIC LOG Water Level and Depth of Cave (ft) 2 DRIVE BULK E '0 ELEVATION (ft) MATERIAL DESCRIPTION DEPTH (ft) SAND, clayey, with fine gravel, lean, slightly moist, dark brown, predominantly fine grained, Sc. — L _ 4756 3.5 ` — — SAND, poorly graded, with fine gravel below 53', slightly moist to wet, light brown, SP. — - -5 — — _ —10-- — _ —15- — —20' L _ —25 — — — —30— — — — — — —35 _ — -. LEGEND Z WATER LEVEL AT TIME OF DRILLING 4 STANDARD PENETRATION TEST # WATER LEVEL # DAYS AFTER DRILLING *# DEPTH OF CAVE # DAYS AFTER DRILLING ^ ^ A H N' r� T E, L 1 DEPTH OF REFUSAL S E R V IC E S PROJECT NAME BORING LOCATION DRILLING COMPANY/RIG DRILLING METHOD HAMMER SYSTEM Meining Site, Gilcrest See Figure 2 Dakota Drilling/CME 75 8.25in. Diameter HSA Automatic Hammer PROJECT NUMBER BORING ELEVATION CMT REP. DATE STARTED DATE COMPLETED 23.3058 4759.5 ft. E. Castle 12/11/2023 12/11/2023 JT-N1 Page 2 of 2 8 G ELEVATION (ft) MATERIAL DESCRIPTION DEPTH (ft — 45 — 50- -55 - —60- - 65 501�� 4699.5 flu •••■ ••• • •••• •••• • ••. .•.• ••. ■••■ •••• 60 4694.1 SANDSTONE, silty, hard, slightly moist, gray. 65.4 Boring terminated at 65.4 feet LEGEND WATER LEVEL AT TIME OF DRILLING DE STANDARD PENETRATION TEST Q# WATER LEVEL # DAYS AFTER DRILLING -# DEPTH OF CAVE # DAYS AFTER DRILLING DEPTH OF REFUSAL C'TrECHNICAL PROJECT NAME Meaning Site, Gilcrest PROJECT NUMBER 23.3058 BORING LOCATION See Figure 2 BORING ELEVATION 4757 ft. DRILLING COMPANY/RIG Dakota Drilling/Diedrich 120 CMT REP, J. Edwards DRILLING METHOD 8.2Sin, Diameter HSA and NX W1reIine Core DATE STARTED 12/4/2023 HAMMER SYSTEM Automatic Hammer DATE COMPLETED 12/4/2023 _ JTn I2 I V Page 1 of 2 DEPTH (ft) [NATUNATURAL DRY RAL (pot) NATURAL MOISTURE CONTENT (%) il LL -PL -PI UNCONFINED COMPRESSIVE STRENGTH (psi) Recovery/RQD (%/^/o) BLOW COUNT SAMPLE GRAPHIC LOG ELEVATION (ft) MATERIAL DESCRIPTION DEPTH (ft) Water Level and Depth of Cave (ft) DRIVE m CLAY, sandy, lean, moist, brown, CL. - 5 _ 4752 5 T SAND, clayey, moist, brown, SC, r — 7 S_ 4749 - --10— SAND, poorly graded, with 1" to 2 " gravel, slightly moist to wet, SP. — — —15- — — —20— k.'• — — —25— -- --39 — — —35— — LEGEND 1 WATER LEVEL AT TIME OF DRILLING ® SPLIT SPOON # WATER LEVEL # DAYS AFTER DRILLING n ROCK CORE --# DEPTH OF CAVE # DAYS AFTER DRILLING r 7 T E C H N 1 C A L 1 DEPTH OF REFUSAL S E R V I C E S PROJECT NAME Melning Site, GiIcrest PROJECT NUMBER 23.3058 BORING LOCATION See Figure 2 BORING ELEVATION 4757 ft. DRILLING COMPANY/RIG Dakota Drilling/Diedrich 120 CMT REP. J. Edwards DRILLING METHOD 8.25in. Diameter NSA and NX Wireline Core DATE STARTED 12/4/2023 HAMMER SYSTEM Automatic Hammer DATE COMPLETED 12/4/2023 3T -N2 Page 2 of 2 DEPTH (ft) NATURAL DRY DENSITY (pcf) NATURAL MOISTURE CONTENT (%) FINES (%) n a d UNCONFINED COMPRESSIVE STRENGTH (psf) G C �e w ° 8 c m SAMPLE GRAPHIC LOG ELEVATION (ft) MATERIAL DESCRIPTION DEPTH (ft) Water Level and Depth of Cave (ft) V G BULK 1 r-45- -50- -55- - - - —60 • •• 9599 58 - - -- - - - x x x x rA 4697 SILSTONE, with fine sand, with clay, very hard, moist, gray. 60 - - _ 119.6 11.2 41 34-25-9 82,000 68/36 �50/10� _ — Cp .... 00.0 0000 0000 4000• 0004 �� 0000 0000 0440. 044.44 040.. .... .. •00. 00444 00044 .000 4040.._ .... .... ..440 •.044 .... .004 044.. .... .... .... 004 0 0400 .... 4444400 .0.0 0... 000. .44.0 ••••46:2 SANDSTONE, silty, hard, slightly weathered, occasional slltstone layers. Slltstone parting. - - - — — — 65 - - - - _ _ _ _ —70— _ - _ - - -75 97/100 75 _ _ — — _ - - _ 82/100 Boring terminated at 75 feet 1 V# -.# 1 LEGEND AT TIME OF DRILLING ® SPLIT SPOON # DAYS AFTER DRILLING Ill ROCK CORE # DAYS AFTER DRILLING �f °T T E C H N I C A L SERVICES WATER LEVEL WATER LEVEL DEPTH OF CAVE DEPTH OF REFUSAL PROJECT NAME Meining Site, Gi'crest PROJECT NUMBER 23.3058 BORING LOCATION See Figure 2 BORING ELEVATION 4755 ft. DRILLING COMPANY/RIG Dakota Drilling/Diedrich 120 CMT REP. J. Edwards DRILLING METHOD 8.25in. Diameter HSA DATE STARTED 1/3/2024 HAMMER SYSTEM 140 lb Automatic Hammer DATE COMPLETED 1/3/2024 lT_ n13 J ' V J Page 1 of 2 NATURAL MOISTURE CONTENT (%) FINES (%) LL -PL -PI SAMPLE GRAPHIC LOG Water Level and Depth of Cave (ft) 8 FC 6 t 3 m C he m ELEVATION(ft) MATERIALDESCRIPTION DEPTH(R) — —, CLAY— sandy, lean, very stiff to hard, slightly moist to moist, brown, mowed, low calcareous, CL. 35/12 5 ---:4749 — 20/12 - fi — — • • • SAND, poorly graded, occasional gravel to 1", medium dense to very dense, slightly moist to wet, brown, SP. - - -10- -- 32/12 � 15 _ _ - - 4.3 5 NV -NV -NP 37/12 X �) _ ^ -20-- C �•.• - _ _ 24/12 x - -25- - - _ - 20/12 X _ _ - - C;: - -30- - - _ _ 48/12 X - - -35- - _ _ 20/12 X LEGEND 1 WATER LEVEL AT TIME OF DRILLING B MODIFIED CALIFORNIA SAMPLER ¶# WATER LEVEL # DAYS AFTER DRILLING 0 SPLIT SPOON -.# DEPTH OF CAVE # DAYS AFTER DRILLING f'i'7 T E C H N I C A L 1 DEPTH OF REFUSAL S E R V I C E$ PROJECT NAME BORING LOCATION DRILLING COMPANY/RIG DRILLING METHOD HAMMER SYSTEM Meining Site, Gilcrest See Figure 2 Dakota Drilling/Diedrich 120 8.25in. Diameter HSA 140 lb Automatic Hammer PROJECT NUMBER BORING ELEVATION CMT REP. DATE STARTED DATE COMPLETED 23.3058 4755 ft. J. Edwards 1/3/2024 1/3/2024 JT-N3 Page 2 of 2 F H G = x a� Z8 a JJ SAMPLE — 45- - 50 - — 55- - 60 - 50/6 40/12 X 66/12 X 50/6 X 25/0 ELEVATION (ft) MATERIAL DESCRIPTION DEPTH (ft) Cobbles from 47'. 9699.5 55.5 X x X x x X x X X x x x x x x x x x x x 469+x.6 SILTSTONE, sandy, very hard, very moist, brown to gray, well cemented from 57', calcareous. 60.4 Boring terminated at 60.4 feet J.EGEND 1 WATER LEVEL AT TIME OF DRILLING MODIFIED CALIFORNIA SAMPLER Q# WATER LEVEL $/ DAYS AFTER DRILLING ® SPLIT SPOON - ►# DEPTH OF CAVE # DAYS AFTER DRILLING DEPTH OF REFUSAL CmTrECHNICAL PROJECT NAME Meining Site, Gilcrest PROJECT NUMBER 23.3058 BORING LOCATION See Figure 2 BORING ELEVATION 4753 ft. DRILLING COMPANY/RIG Dakota Drilling/CME 75 CMT REP. E. Castle DRILLING METHOD 8.25in. Diameter HSA DATE STARTED 12/11/2023 HAMMER SYSTEM Automatic Hammer DATE COMPLETED 12/11/2023 J1 -N I `t Page 1 of 2 BLOW COUNT SAMPLE Water Level and Depth of Cave (ft) DRIVE BULK U Cl 1 ELEVATION (ft) MATERIAL DESCRIPTION DEPTH (ft) P. SAND, clayey, lean, slightly moist, dark brown to light brown, predominantly fine grained, SC. — — 4749.5 3.5" — — SAND, poorly graded, with fine gravel, slightly moist to wet, light brown, SP. - - 5 - -10- - ., - - -15- - - -20- L - -25 _ -30- 6•, - - -35 - - - _ - _ -i LE END y WATER LEVEL AT TIME OF DRILLING 4 STANDARD PENETRATION TEST a# WATER LEVEL # DAYS AFTER DRILLING -'# DEPTH OF CAVE # DAYS AFTER DRILLINGCID '�'� T E C H N I C A L 1 DEPTH OF REFUSAL S E R V I C E S PROJECT NAME BORING LOCATION DRILLING COMPANY/RIG DRILLING METHOD HAMMER SYSTEM Meining Site, Gilcrest See Figure 2 Dakota Drilling/CME 75 8.25in. Diameter HSA Automatic Hammer PROJECT NUMBER BORING ELEVATION CMT REP. DATE STARTED DATE COMPLETED 23.3058 4753 ft. E. Castle 12/11/2023 12/11/2023 JT—N4 Page 2 of 2 8 2 m SAMPLE I a ELEVATION (R) MATERIAL DESCRIPTION DEPTH (ft) ii t a„ 3 l 15- --50 - — 55 -- 50/6 — 60 ? �rrr 4698 O 000 00410 0000 41000 0000 0..• 0000 0..• O 000 O 000 O 00. O 000 ::::4692.6 SANDSTONE, silty, hard, moist, gray, fine grained. Boring terminated at 60.4 feet J 55 60A 1 LEGEND t WATER LEVEL AT TIME OF DRILLING Q# WATER LEVEL # DAYS AFTER DRILLING — ►# DEPTH OF CAVE # DAYS AFTER DRILLING 1 DEPTH OF REFUSAL IIISTANDARD PENETRATION TEST C TTEECHNICAL PROJECT NAME Meining Site, Gilcrest PROJECT NUMBER 23.3058 BORING LOCATION See Figure 2 BORING ELEVATION 4752 ft. DRILLING COMPANY/RIG Dakota Drilling/Diedrich 120 CMT REP, J. Edwards DRILLING METHOD 8.25in. Diameter HSA and NX Wireline Core DATE STARTED 12/6/2023 HAMMER SYSTEM Automatic Hammer DATE COMPLETED 12/6/2023 lT_ n I C .J 1 V J Page 1 of 2 DEPTH (ft) NATURAL DRY DENSITY (pcF) NATURAL MOISTURE CONTENT (%) LL -PL -PI UNCONFINED COMPRESSIVE STRENGTH (psf) rc 11,,, BLOW COUNT SAMPI, GRAPHIC LOG EiEYATION (R) MATERIAL DESCRIPTION DEPTH (ft) 3 a DRIVE . _ _ -5 - - -10 - -15- -20- -25- -30- '-35 - — _'4748 CLAY, sandy, lean, slightly moist, brown, CL. 4 � ! C • SAND, silty, slightly moist, brown, SM. 4745 7 _ ..*:.•_..:r SAND, poorly graded, with 1" gravel, larger gravel from 51`, moist to wet, brown, SP. L - - - - - - - - - - ELEGEND WATER LEVEL AT TIME OF DRILLING V# WATER LEVEL # DAYS AFTER DRILLING -+# DEPTH OF CAVE # DAYS AFTER DRILLING T DEPTH OF REFUSAL SPLIT SPOON ROCK CORE " T E C H N I C A L S E R V I C E S 0 ' PROJECT NAME Meining Site, Gilcrest PROJECT NUMBER 23.3058 BORING LOCATION See Figure 2 BORING ELEVATION 4752 ft. DRILLING COMPANY/RIG Dakota Drilling/Diedrich 120 CMT REP. J. Edwards DRILLING METHOD 8.25in. Diameter HSA and NX Wireline Core DATE STARTED 12/6/2023 HAMMER SYSTEM Automatic Hammer DATE COMPLETED 12/6/2023 n lT_I5 V J JT-N5 Page 2 of 2 DEPTH (ft) NATURAL DRY DENSITY (pcf) NATURAL MOISTURE CONTENT (^k) UNCONFINED COMPRESSIVE STRENGTH (psf) Recovery/RQD (%/%) BLOW COUNT SAMPLE GRAPHIC LOG Water Level and Depth of Cave (ft) a IBULK I W 9. G ta ta LL p ELEVATION (ft) MATERIAL DESCRIPTION DEPTH (ft) -45- - - -50 - - - _ - .x4699 •x 53 . x SILTSTONE, with fine sand, thin claystone partings, very hard. - - x x - - —55- _ 4697 55 __50/6 _ ____ • 469G CLAYSTONE, very hard. Sfi •••• SANDSTONE, silty, hard to very hard, gray, fresh slightly weathered, thin '" • ••• to medium bedding, very tight to wide fractures. - - 109.7 11.7 72 31-25-6 6,300 77/57 �::: 0004 _ _ 1004 •••41_ _ 0.04 4000 0000 4.... Claystone parting. — - —60 0060 ..06 0... .000 100/95 0000- 0666 - - 0064 0..0 ...0 .004 000.4 - - —65- L - — 00000064 .... •.6. - - 0004 •004 _ _ 0000 ,- - 100/100 0,04 - - 0..0 0000 - - _ _ 004,6 0000 _ .006 —70 - !•_--4682 70 Boring terminated at 70 feet LEGEND 1 WATER LEVEL AT TIME OF DRILLING SPLIT SPOON 0 V# WATER LEVEL 4t DAYS AFTER DRILLING fl ROCK CORE --'# DEPTH OF CAVE # DAYS AFTER DRILLING CM'T T E C H N I C A L DEPTH OF REFUSAL SERVICES PROJECT NAME Meining Site, Gilcrest PROJECT NUMBER 23.3058 BORING LOCATION See Figure 2 BORING ELEVATION 4751 ft. DRILLING COMPANY/RIG Dakota Drilling/Diedrich 120 CMT REP. J. Edwards DRILLING METHOD 8.25in. Diameter HSA DATE STARTED 1/4/2024 HAMMER SYSTEM 140 lb Automatic Hammer DATE COMPLETED 1/4/2024 A lT_16 V V JT-N6 Page 1 of 2 NATURAL MOISTURE CONTENT (^/o) LL -PL -PI BLOW COUNT SAMPLE GRAPHIC LOG 8g DRIVE 1 BULK A y II E W 30 o LL ELEVATION (ft) MATERIAL DESCRIPTION DEPTH (ft) CLAY, sandy, lean, very stiff, moist, dark brown, CL. - - 4749 2 24/12 SAND, clayey, medium dense, moist, dark brown, predominantly fine grained, SC. 4747 4 - SAND, poolry graded, with occasional gravel to 1", medium dense to very dense, moist to wet, - 5 - H brown, SP. i_ _ 10/12 -Ia- 1, _ _ _ 24/12 )[ _ -15- V__ _ _ 23/12 _ _ _ _ ..,. -20- X -- - _ _ 31/12 1111 .':. -25 - : • - 53/12 X �.•.•, _ - V _ - 30 - - - 12.1 3 NV -NV -NP 50/5 X -35- 'I - _ 40/12 �( LEGEND WATER LEVEL AT TIME OF DRILLING A MODIFIED CALIFORNIA SAMPLER # WATER LEVEL # DAYS AFTER DRILLING SPLIT SPOON -+# DEPTH OF CAVE # DAYS AFTER DRILLING r' ' T E C H N I C A L I DEPTH OF REFUSAL S E R V I C E S PROJECT NAME Meining Site, Gilcrest PROJECT NUMBER 23.3058 BORING LOCATION See Figure 2 BORING ELEVATION 4751 ft. DRILLING COMPANY/RIG Dakota Drilling/Diedrich 120 CMT REP. J. Edwards DRILLING METHOD 8.25in. Diameter HSA DATE STARTED 1/4/2024 HAMMER SYSTEM 140 lb Automatic Hammer DATE COMPLETED 1/4/2024 A lT_16 .J I V V Page 2 of 2 DEPTH (ft) NATURAL MOISTURE CONTENT (^b) LL -PL -PI BLOW COUNT SAMPLE GRAPHIC LOG Water Level and Depth of Cave (ft) 0 DRIVE 1 BULK O1 W ELEVATION (ft) MATERIAL DESCRIPTION DEPTH (ft) _ 18/12 X f::::::- �-45 - `,ii: — - _ _ 52/12 x I 1 Gravel 2" to 3" at 46' to 53'. _50- — - 46/12 X - - 53 _4698 L.„50/4„...-- • CLAYSTONE, very hard, moist, gray, slight to moderate oxidation. —55- 4695.3 55.7 75/8 Boring terminated at 55.7 feet LEGEND 1 WATER LEVEL AT TIME OF DRILLING H MODIFIED CALIFORNIA SAMPLER Q# WATER LEVEL # DAYS AFTER DRILLING 0 SPLIT SPOON -# DEPTH OF CAVE # DAYS AFTER DRILLING CMT E C H N I C A L 1 DEPTH OF REFUSAL S E R V I C E; PROJECT NAME Meining Site, Gllcrest PROJECT NUMBER 23.3058 BORING LOCATION See Figure 2 BORING ELEVATION 4751.5 ft. DRILLING COMPANY/RIG Dakota Dril€ing/Dledrich 120 CMT REP. ERC/JBE DRILLING METHOD 8.25in, Diameter I-ISA and NX Wireline Core DATE STARTED 12/7/2023 HAMMER SYSTEM 140 lb Hammer, Rope & Cathead DATE COMPLETED 12/7/2023 _ 1TN7 J I V Page 1 of 2 DEPTH (ft) NATURAL DRY DENSITY (pcf) NATURAL MOISTURE CONTENT (%) E E a n UNCONFINED COMPRESSIVE STRENGTH (psf) m rr ; A.3 g a 8 2 SAMPLE a t7 ELEVATION (ft) MATERIAL DESCRIPTION DEPTH {R) Water Level and Depth of Cave (ft) W p m _ — - -- 5 - —10- -15- _ - -20- _ - -3i]- -35- r SAND, clayey, lean, slightly moist, dark brown, SC. 4749.5 2 �'. i.--25-- SAND, poorly graded, slightly moist to wet, light brown to yellow brown, medium to coarse grained, SP. - - _ - - I- - - - _ - - - - - - r - - - Q# *# 1 LEGEND AT TIME OF DRILLING II # DAYS AFTER DRILLING [I # DAYS AFTER DRILLING STANDARD PENETRATION TEST ROCK CORE T E C H N I C A L S E R V I C E S WATER LEVEL WATER LEVEL DEPTH OF CAVE DEPTH OF REFUSAL PROJECT NAME Meining Site, Gilcrest PROJECT NUMBER 23.3058 BORING LOCATION See Figure 2 BORING ELEVATION 4751.5 ft. DRILLING COMPANY/RIG Dakota Drilling/Diedrich 120 CMT REP. ERC/JBE DRILLING METHOD 8.25in. Diameter HSA and NX Wireline Core DATE STARTED 12/7/2023 HAMMER SYSTEM 140 lb Hammer, Rope & Cathead DATE COMPLETED 12/7/2023 I V _ JTIV 7 Page 2 of 2 DEPTH (ft) NATURAL DRY DENSITY (pcf) NATURAL MOISTURE CONTENT (%) FINES (%) LL -PL -PI UNCONFINED COMPRESSIVE STRENGTH (psf) Recovery/RQD (%/%) BLOW COUNT SAMPLE GRAPHIC LOG Water Level and Depth of Cave (ft) c ELEVATION (ft) MATERIAL DESCRIPTION DEPTH(ft) -45- - i —50- — - - .' 4697 54.5- - �. CLAYSTONE, gravelly near contact, hard, slightly to very weathered, thin - - -55 50J7 = to medium bedded- tighlty jointed. -, — _ - 130.5 3.9 65 40-24-16 160,00( 55/38 - - -- _ -60 - -i i - - ....>» _ 75/53 ,isa$ 5 63 i..i .... SANDSTONE, fine, moderately hard, slightly weathered, thin to medium - 10••• .... bedding planes, very tightly joining.1,414.0 - - 1010.• 1010.■ - - 10.►. 1010.. - - •••• - - 80/57 101010• Claystone parting at 67-1/2 feet. - - :;:: - - .... .... .... - 70 ....0601.5 70 Boring terminated at 70 feet LEGEND t WATER LEVEL AT TIME OF DRILLING STANDARD PENETRATION TEST 14 V# WATER LEVEL # DAYS AFTER DRILLING ' ROCK CORE —►# DEPTH OF CAVE # DAYS AFTER DRILLING CM IT TECHNICAL 1 DEPTH OF REFUSAL SERVICES PROJECT NAME Meining Site, Gilcrest PROJECT NUMBER 23.3058 BORING LOCATION See Figure 2 BORING ELEVATION 4753.5 ft. DRILLING COMPANY/RIG Dakota Drilling/Diedrich 120 CMT REP. J. Edwards DRILLING METHOD 8.25in. Diameter HSA DATE STARTED 1/4/2024 HAMMER SYSTEM 140 lb Automatic Hammer DATE COMPLETED 1/4/2024 _ '1TN8 J 1 V (7 Page 1 of 2 DEPTH (ft) NATURAL MOISTURE CONTENT (%) o z ii LL -PL -PI BLOW COUNT SAMPLE GRAPHIC LOG ELEVAT ION (R) MATERIAL DESCRIPTION DEPTH (ft) qY 1: to 30 DRIVE m ` - —10- _ _ —15- _ _ —20- _ 1 —25- _ -30 —35- _ _ r - _ CLAY, sandy, lean, occasional fine gravel, lean, stiff, moist, gray to brown, low calcareous, CL. .4751 2.5- - - _ _ - - — _ - 14/12 t J M r' A„ s��•�� •; ; SAND, poorly graded, occasional 1" gravel, medium dense to very dense, moist to wet, brown, SP. L 14/12 A 28/12 t 7 X 27/12 X X 15/12 10/12 7C 16/12 ][ X 40/12 LE END i WATER LEVEL AT TIME OF DRILLING 7# WATER LEVEL # DAYS AFTER DRILLING -'# DEPTH OF CAVE # DAYS AFTER DRILLING 1 DEPTH OF REFUSAL ® MODIFIED CALIFORNIA SAMPLER N I C A L 1 C E$ Ki SPLIT SPOON CMTIE H 8 E C R V PROJECT NAME Meining Site, Gilcrest PROJECT NUMBER BORING LOCATION See Figure 2 BORING ELEVATION DRILLING COMPANY/RIG Dakota Drilling/Diedrich 120 CMT REP. DRILLING METHOD 8.25in. Diameter HSA DATE STARTED HAMMER SYSTEM 140 lb Automatic Hammer DATE COMPLETED 23.3058 4753.5 ft. J. Edwards 1/4/2024 1/4/2024 JT-N8 Page 2 of 2 re E [NATURAL MOISTURE CONTENT(%) FINES (%) LL -PL -PI BLOW COUNT SAMPLE GRAPHIC LOG ELEVATION (ft) MATERIAL DESCRIPTION DEPTH (ft) Water Level and 1 Depth of Cave (ft) p BULK 54/12 X ': :ii - - —45 - -- _ _ 54/12 2" to 3" Gravel from 47' to 56.5'. -50 L: ..___55_,.....1 - �.� . - - •'• ' 4699.5 5I SAND, clayey, with gravel, dense, wet, brown, SC. -- 55 _ _ 14.7 22 29-19-10 40/12 ' I }C �r ^r ✓ ,4697 56.5- - - - - - x x x x x x x x x x x x SILTSTONE, very hard, moist, gray, moderate to severe oxidation. - - - - X50/4,-.. -60- x x 4693.2 60.3— - AAI ________/4 Boring terminated at 60.3 feet LEGEND I WATER LEVEL AT TIME OF DRILLING e MODIFIED CALIFORNIA SAMPLER Q# WATER LEVEL # DAYS AFTER DRILLING r j SPLIT SPOON -'# DEPTH OF CAVE # DAYS AFTER DRILLING T r C H I ^ A L 1 DEPTH OF REFUSAL S E R V IC E S PROTECT NAME Meini()g Site, Gilcrest PROJECT NUMBER BORING LOCATION See Figure 2 BORING ELEVATION DRILLING COMPANY/RIG Dakota Drilling/CME 75 CMT REP. DRILLING METHOD 8.251n. Diameter HSA DATE STARTED HAMMER SYSTEM Automatic Hammer DATE COMPLETED 23.3058 4755 ft. E. Castle 12/11/2023 12/11/2023 1 I Y JT_N9 Page 1 of 2 DEPTH (ft) BLOW COUNT SAMPLE GRAPHIC LOG Water Level and Depth of Cave (ft) W [ BULK C ELEVATION (ft) MATERIAL DESCRIPTION DEPTH (ft) SAND, clayey, lean, slightly moist, dark brown, predominantly fine grained, SC. t - - - - 4752.5 2.5 - - -- - SAND, poolry-graded, with fine gravel, slightly moist to wet, light brown, SP. - - - 5 - - - -10- - -1s- - _20_ Z -25 - - - -30 - - - -35- LEGEND WATER LEVEL AT TIME OF DRILLING m STANDARD PENETRATION TEST # WATER LEVEL # DAYS AFTER DRILLING 4# DEPTH OF CAVE # DAYS AFTER DRILLING °-I-T E C H H 1 C A L 1 DEPTH OF REFUSAL S E R V I C E S PROJECT NAME BORING LOCATION DRILLING COMPANY/RIG DRILLING METHOD HAMMER SYSTEM Meining Site, Gilcrest See Figure 2 Dakota Drilling/CME 75 8.251n. Diameter HSA Automatic Hammer PROJECT NUMBER BORING ELEVATION CMT REP, DATE STARTED DATE COMPLETED 23.3058 4755 ft. E. Castle 12/11/2023 12/11/2023 JT-N9 Page 2 of 2 0 8 S SAMPLE O m `qw ELEVATION (ft) MATERIAL DESCRIPTION DEPTH (ft) AY t. 3g -45 - -50- -55- .,50/4 -60- 50/5 .••••• • •..•... •••• • ....• .:..••►• •..• •••• iii•• •►•• •••. •..• •..• 4696 59 4690.6 SANDSTONE, silty, very hard, moist, gray, fine grained. 64.4 Bonng terminated at 64.4 feet 1 WATER LEVEL AT TIME OF DRILLING WATER LEVEL # DAYS AFTER DRILLING ---p# DEPTH OF CAVE # DAYS AFTER DRILLING DEPTH OF REFUSAL STANDARD PENETRATION TEST C TTECHNIC S E R V I C E AL S PROJECT NAME Meining Site, Gi!crest PROJECT NUMBER 23.3058 BORING LOCATION See Figure 2 BORING ELEVATION 4756.5 ft. DRILLING COMPANY/RIG Dakota Drilling/Diedrich 120 , CMT REP. J. Edwards DRILLING METHOD 8.251n. Diameter PISA and NX Wireline Core DATE STARTED 12/5/2024 HAMMER SYSTEM Automatic Hammer COMPLETED 12/5/2024 J I _ICI i 0 I �� VV 1 Page 1 of 2 DEPTH (ft) NATURAL DRY DENSITY (pcf) NATURAL MOISTURE CONTENT (%) zi , LL LL -PL -PI UNCONFINED COMPRESSIVE STRENGTH (psf) 0 a m �O y. E., BLOW COUNT [SAMPLE l [SAMPLE GRAPHIC LOG ELEVATION (ft) MATERIAL DESCRIPTION DEPTH (ft) Water Level and Depth of Cave (ft) DRIVE BULK - — 5 _ _4750.5 —10- L _ —15— —20— - — -30- -35- —''4752.5 CLAY, sandy, lean, moist, brown, CL. 4 h ','. SAND, silty, moist, brown, SM. fi — - SAND, poorly graded, with gravel to 2', moist to wet, SP. — .. - — — — - r — - - - - 1 # '# 1 LEGEND AT TIME OF DRILLING # DAYS AFTER DRILLING # DAYS AFTER DRILLING SPLIT SPOON CORE CM T E C H N I C L S E R V I C E S WATER LEVEL WATER LEVEL DEPTH OF CAVE DEPTH OF REFUSAL 0 ['ROCK PROJECT NAME Meining Site, Gilcrest PROJECT NUMBER 23.3058 BORING LOCATION See Figure 2 BORING ELEVATION 4756.5 ft. DRILLING COMPANY/RIG Dakota Drilling/Diedrich 120 CMT REP. J. Edwards DRILLING METHOD 8.25in. Diameter HSA and NX Wireline Core DATE STARTED 12/5/2024 HAMMER SYSTEM Automatic Hammer DATE COMPLETED 12/5/2024 lT_ n I i1 0 .l 1 V Page 2 of 2 DEPTH (ft) NATURAL DRY DENSITY (pcf) NATURAL MOISTURE CONTENT (%) FINES (%) LL -PL -PI UNCONFINED COMPRESSIVE STRENGTH (psf) c a rc d a BLOW COUNT SAMPLE GRAPHIC LOG ELEVATION (ft) MATERIAL DESCRIPTION DEPTH (ft) Water Level and Depth of Cave (ft) DRIVE BULK • _ - -I —45 - - - Cobbles from 47' to 57'. —50 _ _ -55-- - - - - 4699.5 57 - J i...... CLAYSTONE, with sand, hard to very hard, thinly bedded, slightly to moderately weathered, low fracturing, moist, gray. - - — - 50/6 oc -60- - - - - t21.7 803 81 42-19-23 70,450 83/58 _ - . - - -65- r, - _ _ 97/77 _ - = - - i - - - - - - - -70 — 4686.5 70 = ;;; SANDSTONE, with fine gravel, hard to very hard, thinly bedded, slightly - 90/77 •••. •••• interbedded, lygweathered,tightfracturing,occasionallayerofclaystone ray. - - _ _- •.•• — ••••4682.5 74 Boring terminated at 74 feet LEGEND Z WATER LEVEL AT TIME OF DRILLING SPLIT SPOON 0 # WATER LEVEL # DAYS AFTER DRILLING I ROCK CORE '# DEPTH OF CAVE # DAYS AFTER DRILLING �� °7° T E C H N I C A L 1 DEPTH OF REFUSAL SERVICES PROJECT NAME Meining Site, Gilcrest PROJECT NUMBER 23.3058 BORING LOCATION See Figure 2 BORING ELEVATION 4757.5 ft. DRILLING COMPANY/RIG Dakota Drilling/Diedrich 120 CMT REP. E. Castle DRILLING METHOD 8.25in. Diameter HSA DATE STARTED 1/5/2024 HAMMER SYSTEM Rope & Cathead DATE COMPLETED 1/5/2024 JT_ n I i i 1 V 1 1 Page 1 of 2 DEPTH (ft) I NATURAL DRY DENSITY (pcf) NATURAL MOISTURE CONTENT (%) LL -PL -PI BLOW COUNT SAMPLE GRAPHIC LOG Water Level and Depth of Cave (ft) 1 w m ELEVATION (ft) MATERIAL DESCRIPTION DEPTH (ft) SAND, clayey, lean, loose, moist, dark brown to light brown, low calcareous, slight 9/12 oxidation, SC. - _ f _ 4754.5 3 SAND, poolry graded, occasional fine gravel, medium dense to very dense, moist to wet, 13/12 dark brown to light brown, SP. - —5 - - 106.7 1.7 2 NV -NV -NP 26/12 �'•' ' r;•• •— - —10 - - 26/12 L —15- ^ 34/12 —20- -- - 128 7.6 4 NV -NV -NP 15/12 —25 N •50/8 — - -30- - iiiii.- - - - - 50/7 -35- - - 18. 13 4 V -NV NP 50/5 - - LEGEND Z WATER LEVEL AT TIME OF DRILLING e MODIFIED CALIFORNIA SAMPLER 7# WATER LEVEL # DAYS AFTER DRILLING -.# DEPTH OF CAVE # DAYS AFTER DRILLING "TF T E C H N I C A L 1 DEPTH OF REFUSAL S E R V I C E S PROJECT NAME Melning Site, Gilcrest PROJECT NUMBER 23.3058 BORING LOCATION See Figure 2 BORING ELEVATION 4757.5 ft. DRILLING COMPANY/RIG Dakota Drilling/Diedrich 120 CMT REP. E. Castle DRILLING METHOD 8.25in, Diameter HSA DATE STARTED 1/5/2024 HAMMER SYSTEM Rope & Cathead DATE COMPLETED 1/5/2024 i i lT_ N J 1 V 1 1 Page 2 of 2 DEPTH (ft) NATURAL DRY DENSITY (pcf) NATURAL MOISTURE CONTENT (%) FINES (%) a BLOW COUNT SAMPLE GRAPHIC LOG Water Level and Depth of Cave (ft) DRIVE J . ELEVATION (ft) MATERIAL DESCRIPTION DEPTH (ft) 1 505 -45- - .i ' - - ',.5,:. 50/10 -55- ,-- - 50/1 '...4699.5 58 - y CLAYSTONE, very hard, moist, blue -gray, slight to moderate oxidation. = 4697.2 60.3 - - —60 -4 0 0. 85 R I7-2 5p q Boring terminated at 60.3 feet LEGEND y WATER LEVEL AT TIME OF DRILLING B MODIFIED CALIFORNIA SAMPLER a# WATER LEVEL # DAYS AFTER DRILLING - # DEPTH OF CAVE # DAYS AFTER DRILLING r'' T E C H N I C A L 1 DEPTH OF REFUSAL S E R V I C E S PROJECT NAME Meining Site, Gilcrest PROJECT NUMBER 23.3058 BORING LOCATION See Figure 2 BORING ELEVATION 4762 ft. DRILLING COMPANY/RIG Dakota Driiling/CME 75 CMT REP. J. Edwards DRILLING METHOD 8.25in. Diameter LISA DATE STARTED 12/13/2023 HAMMER SYSTEM Automatic Hammer DATE COMPLETED 12/13/2023 i lT_ J .71 S Page 1 of 2 DEPTH (ft) BLOW COUNT DRIVE BULK GRAPHIC LOG ELEVATION (R) MATERIAL DESCRIPTION DEPTH (R) Water Level and Depth of Cave (ft) - - - - -5 - -10- -15- - -20- -25 -- -30 - -35 - CLAY, sandy, Lean, moist, brown, CL. 4760 7 SAND, clayey, with fine gravel, moist, brown, SC. 1758.5 3.5' - - - - - -- - - - -, - - - - - SAND, poorly graded, with gravel to 2", moist to wet, brown, SP. Y LEGEND 1 WATER LEVEL AT TIME OF DRILLING e MODIFIED CALIFORNIA SAMPLER # WATER LEVEL # DAYS AFTER DRILLING -►# DEPTH OF CAVE # DAYS AFTER DRILLING t DEPTH OF REFUSAL Cal T E C H N I C A L S E R V I C E$ PROJECT NAME BORING LOCATION DRILLING COMPANY/RIG DRILLING METHOD HAMMER SYSTEM Meining Site, Giicrest See Figure 2 Dakota Drilling/CME 75 8.25in. Diameter HSA Automatic Hammer PROJECT NUMBER BORING ELEVATION CMT REP, DATE STARTED DATE COMPLETED 23.3058 4762 ft. J. Edwards 12/13/2023 12/13/2023 JT-S1 Page 2 of 2 F C 8 SAMPLE - - -15 - L _ --50- -55- -60- 50/6 b . ELEVATION (ft) MATERIAL DESCRIPTION DEPTH (ft) N Y d 470? 60 — 6- 575/dam �. CLAYSTONE, very hard, moist, gray. 4696.7 65.3 Boring terminated at 65.3 feet LEg END Z WATER LEVEL AT TIME OF DRILLING WATER LEVEL # DAYS AFTER DRILLING —►# DEPTH OF CAVE 4 DAYS AFTER DRILLING 1 DEPTH OF REFUSAL B MODIFIED CALIFORNIA SAMPLER CmTTECHNICAL PROJECT NAME Meining Site, Gilcrest PROJECT NUMBER 23.3058 BORING LOCATION See Figure 2 BORING ELEVATION 4761 ft. DRILLING COMPANY/RIG Dakota Drilling/CME 75 CMT REP. J. Edwards DRILLING METHOD 8.25in. Diameter HSA DATE STARTED 12/13/2023 HAMMER SYSTEM Automatic Hammer DATE COMPLETED 12/13/2023 JT-S2 Page 1 of 2 DEPTH (ft) sAMPLE Water Level and Depth of Cave (ft) r w 6 i 8 3 DRIVE I BULK 1 U a.$ g (� ELEVATION(ft) MATERIAL DESCRIPTION DEPTH(ft) CLAY, sandy, lean, medium stiff, moist, dark brown, CL. - -- 9/12 H 4758.5 2.5^ - t� . SAND, poorly graded, with clay, loose, moist, brown, fine to medium grained, SP -SC. ! :::.,..0 5 _ —5^ 134756 1 NV -NV -NP 11/12 H SAND, poolry graded, with gravel to 2", medium dense to very dense, moist to wet, brown, SP. - - - • ': _ _ 47/12 X - —15 - P.•:. — - - 29/12 7C ' • • - I7 —20- ;•� �• — 49/12 _ _ X •.•:: r; _ _ - J - - —25 - , _ - 35/12 * 2 X —30- _ _ . '�' — - 52/12 (/�(� +1 ^35- — - 1 f 40/12 ][ - _ LEGEND Z WATER LEVEL AT TIME OF DRILLING MODIFIED CALIFORNIA SAMPLER Q# WATER LEVEL # DAYS AFTER DRILLING 0 SPLIT SPOON -'# DEPTH OF CAVE # DAYS AFTER DRILLING T E C H N I C A L 1 DEPTH OF REFUSAL S E RV I C E$ PROJECT NAME Meining Site, Gilcrest PROJECT NUMBER BORING LOCATION See Figure 2 BORING ELEVATION DRILLING COMPANY/RIG Dakota Drilling/CME 75 CMT REP. DRILLING METHOD 8.25in. Diameter HSA DATE STARTED HAMMER SYSTEM Automatic Hammer DATE COMPLETED 23.3058 4761 ft. J. Edwards 12/13/2023 12/13/2023 JT-S2 - JTS2 Page 2 of 2 DEPTH (ft) a al LL -PL -PI BLOW COUNT SAMPLE GRAPHIC LOG r Water Level and Depth of Cave (ft) DRIVE BULK W Z ELEVATION (ft) MATERIAL DESCRIPTION DEPTH 1t) _ 37/12 X _ -45 •:•:': � - - ' J 45/12 )( /, ::::: -- v ` C::::: - - -50- _ X - - 47/12 - _ •: -55- ••'• - - _ _ 21/12 x ;:: • _ -60 - ••• 4701 60 50/6 x x x x SILTSTONE, with fine sand, very hard, very moist, brown. — warm 4699 62 CLAYSTONE, very hard, moist, gray. ■l - - 64.3- 1 "`4696.7 X50/4 Boring terminated at 64.3 feet LEGEND 1 WATER LEVEL AT TIME OF DRILLING e MODIFIED CALIFORNIA SAMPLER of WATER LEVEL # DAYS AFTER DRILLING 0 SPLIT SPOON -'# DEPTH OF CAVE # DAYS AFTER DRILLING �� t DEPTH OF REFUSAL T E C H N I C A L S E RV I C E; PROJECT NAME Meining Site, Gilcrest PROJECT NUMBER 23.3058 BORING LOCATION See Figure 2 BORING ELEVATION 4750 ft. DRILLING COMPANY/RIG Dakota Drffling/Diedrich 120 CMT REP. E. Castle DRILLING METHOD 8.25in. Diameter H5A and NX Wireline Core DATE STARTED 12/20/2023 HAMMER SYSTEM Rope & Cathead DATE COMPLETED 12/20/2023 lT_S3 JT-S3 JJ Page 1 of 2 DEPTH (ft) NATURAL DRY DENSITY (pcI) NATURAL MOISTURE CONTENT (%) 0 W a G UNCONFINED COMPRESSIVE STRENGTH (psf) O a m mr. ) O? C e BLOW COUNT SAMPLE GRAPHIC LOG ELEVATION (R) MATERIAL DESCRIPTION DEPTH (ft Water Level and Depth of Cave (ft) . J m - - — 5 — -10-- - - —15— .. _ —20- —25- —30- —35- SAND, clayey, lean, slightly moist, dark brown, predominantly fine grained, SC. 4746 •1 'r 4'• 6'. SAND, poorly graded, with occasional fine gravel, slightly moist to light brown, SP. wet, — - - - L. — — _ - — - — - Q# +# 1 LEGEND AT TIME OF DRILLING # DAYS AFTER DRILLING # DAYS AFTER DRILLING MODIFIED CALIFORNIA SAMPLER ROCK CORE - ` T T E C H N I C A L S E RV le E S WATER LEVEL WATER LEVEL DEPTH OF CAVE DEPTH OF REFUSAL I PROJECT NAME Meining Site, Gilcrest PROJECT NUMBER 23.3058 BORING LOCATION See Figure 2 BORING ELEVATION 4750 ft. DRILLING COMPANY/RIG Dakota Drilling/Diedrich 120 CMT REP. E. Castle DRILLING METHOD 8.25in. Diameter NSA and NX Wireline Core DATE STARTED 12/20/2023 HAMMER SYSTEM Rope & Cathead DATE COMPLETED 12/20/2023 lT_S3 JT-S3 JJ Page 2 of 2 DEPTH (ft) NATURAL DRY DENSITY (pcf) NATURAL MOISTURE CONTENT (%) UNCONFINED COMPRESSIVE STRENGTH (psf) BLOW COUNT SAMPLE GRAPHIC LOG Water Level and Depth of Cave (ft) c a rc DRIVE 1 BULK o a k W a.. ELEVATION (ft) MATERIAL DESCRIPTION DEPTH (ft) -45- - - - -50 - - - - - _ - •� -55- - -60- C•: _ _ - ••'.!: 2661 4688.5 61.5 - - CLAYSTONE, very hard, very moist, gray. - - — — I■ - = -65- ,_50/6 = 13.6 88 40-21-19 107,060 93/92 _ _ x120.1 - - -70- - - _ - 95/80 pi - - a -75 - - - pmmmil _ - rmmmm - - - 95/95 - - = L _ - - I4671 79 Boring terminated at 79 feet LEGEND i WATER LEVEL AT TIME OF DRILLING MODIFIED CALIFORNIA SAMPLER � Q# WATER LEVEL # DAYS AFTER DRILLING 1 ROCK CORE -+# DEPTH OF CAVE # DAYS AFTER DRILLINGCIMn T EHIC A L 1 DEPTH OF REFUSAL S E R V I C E S PROJECT NAME Meining Site, Gilcrest PROJECT NUMBER 23.3058 BORING LOCATION See Figure 2 BORING ELEVATION 4759 ft. DRILLING COMPANY/RIG Dakota Drilling/CME 75 CMT REP. J. Edwards DRILLING METHOD 8.25in. Diameter HSA DATE STARTED 12/13/2023 HAMMER SYSTEM Automatic Hammer DATE COMPLETED 12/13/2023 _ JTS `t Page 1 of 2 DEPTH (ft) NATURAL DRY DENSITY (pcf) NATURAL MOISTURE CONTENT (%) FINES (%) LL -PL -PI BLOW COUNT SAMPLE GRAPHIC LOG ELEVATION (ft) MATERIAL DESCRIPTION DEPTH (ft) Water Level and Depth of Cave (ft) pm - - 5 - -10 - -15- -20- -25- -30- -35 - CLAY, sandy, lean, moist, brown, CL. 4757 2 - F-- 3 ••4754 SAND, poorly graded, with gravel, moist, brown, SP. 5 SAND, clayey, with gravel to 1", moist, brown, SC. 4749 10 '•• • :.: SAND, poorly graded, with gravel to 2", moist to wet, brown, SP. - - - L. _ - - - - - - 1 Q# -.# 1 LEGEND AT TIME OF DRILLING e MODIFIED CALIFORNIA SAMPLER # DAYS AFTER DRILLING # DAYS AFTER DRILLING � ' T T E C H N I C A L S E R V IC E S WATER LEVEL WATER LEVEL DEPTH OF CAVE DEPTH OF REFUSAL PROJECT NAME Meining Site, Gilcrest PROJECT NUMBER BORING LOCATION See Figure 2 BORING ELEVATION DRILLING COMPANY/RIG Dakota Drilling/CME 75 CMT REP, DRILLING METHOD 8.25in, Diameter HSA DATE STARTED HAMMER SYSTEM Automatic Hammer DATE COMPLETED 23.3058 4759 ft. J. Edwards 12/13/2023 12/13/2023 JT-S4 Page 2 of 2 DEPTH (ft) NATURAL DRY DENSITY (pcf) NATURAL MOISTURE CONTENT (%) FINES (%) LL -PL -PI g I8 SAMPLE GRAPHIC LOG ELEVATION (ft) MATERIAL DESCRIPTION DEPTH (ft) Water Level and Depth of Cave (ft) �7au G IBULK _ -45, —50- - -I- —55- - _'47Q0 60 50/6 id it iiiiii iii r•• _ - - — - With coarse gravel 51' to 59'. 59 — - CLAYSTONE, very hard, moist, gray. 64.3— _ — - _ - - — _ _ _ - - .110.3j7.2_94 _,44-17-77 ." rte■ �l .1694.7 5013 Boring terminated at 64.3 feet LEGEND 1 WATER LEVEL AT TIME OF DRILLING B MODIFIED CALIFORNIA SAMPLER ¶# WATER LEVEL Al DAYS AFTER DRILLING -# DEPTH OF CAVE # DAYS AFTER DRILLING 1 DEPTH OF REFUSAL C T E H H I C L S EC R V I C E S PROJECT NAME Meining Site, Gilcrest PROJECT NUMBER 23.3058 BORING LOCATION See Figure 2 BORING ELEVATION 4757 ft. DRILLING COMPANY/RIG Dakota Drilling/CME 75 CMT REP. E. Castle DRILLING METHOD 8.25in. Diameter HSA DATE STARTED 12/12/2023 HAMMER SYSTEM Automatic Hammer DATE COMPLETED 12/12/2023 JT_S5 J Page 1 of 2 DEPTH (ft) LL -PL -PI BLOW COUNT SAMPLE GRAPHIC LOG DRIVE BULK A y 30 ELEVATION (ft) MATERIAL DESCRIPTION DEPTH (ft) CLAY, lean, with sand, medium stiff, moist, dark brown, CL 8/12 — 4753.5 3.5 _ - - - —5 - SAND, clayey, loose, moist, dark brown, fine to medium grained, SC. - - — - 9/12H `4748.5 8.5 - - `, A .;.; ; ' ' SAND, poorly graded, moist, medium to very dense, slightly moist to wet, fine to medium grained, light brown to light yellowish brown, SP. 31/12 -10- - - _ - �•�• • Y_ _ h15_ 35/12 - L _ - -20- 20/12 N r.•:•: - - - - 35/12 n -25- - - pi.,4 c•:•:• ~ _ 50/9 -30- C•: •• - - - - 50/10 4 -35- - NV -NV -NP 50/9 LEGEND y WATER LEVEL AT TIME OF DRILLING ® MODIFIED CALIFORNIA SAMPLER .# WATER LEVEL # DAYS AFTER DRILLING *# DEPTH OF CAVE # DAYS AFTER DRILLING OPT!: E C H N I C A L ►► 1 DEPTH OF REFUSAL E R IC E S PROJECT NAME Meining Site, Gilcrest PROJECT NUMBER 23.3058 BORING LOCATION See Figure 2 BORING ELEVATION 4757 ft. DRILLING COMPANY/RIG Dakota Drilling/CME 75 CMT REP. E. Castle DRILLING METHOD 8.25in. Diameter HSA DATE STARTED 12/12/2023 HAMMER SYSTEM Automatic Hammer DATE COMPLETED 12/12/2023 JT-S5 Page 2 of 2 DEPTH (ft) LL -PL -PI BLOW COUNT SAMPLE GRAPHIC LOG ELEVATION (ft) MATERIAL DESCRIPTION DEPTH (ft) II isQ D BULK 1 —45 - _ _ -SO- -55 - - _ —60— _ — i N 4713 41 50/7 4709 SAND, clayey, very dense, wet, fine to coarse grained, SC. 48 r'.': A•• .•�•. `" 4698 SAND, poorly graded, with coarse gravel, dense, wet, fine to coarse grained, SR 59 - - -- - 50/10 50/11 �50/4„And CLAYSTONE, very hard, wet, gray. 64.3— — — - - — .... `l X4692.7 \50/4 Boring terminated at 64.3 feet y .# +# 1 LE END TIME OF DRILLING DAYS AFTER DRILLING # DAYS AFTER DRILLING N' 1 C A L V I C E S WATER LEVEL AT WATER LEVEL # DEPTH OF CAVE DEPTH OF REFUSAL � MODIFIED CALIFORNIA SAMPLER CMI7 T E C H S E R PROJECT NAME Meining Site, Gilcrest PROJECT NUMBER 23.3058 BORING LOCATION See Figure 2 BORING ELEVATION 4756 ft. DRILLING COMPANY/RIG Dakota Drilling/D-120 CMT REP. E. Castle DRILLING METHOD 8.25in. Diameter HSA and NX Wireline Core DATE STARTED 12/18/2023 HAMMER SYSTEM Rope & Cathead DATE COMPLETED 12/18/2023 _ JTS6 JV Page 1 of 2 DEPTH (ft) NATURAL DRY DENSITY (pd) NATURAL MOISTURE CONTENT (%) LC LL -PL -PI UNCONFINED COMPRESSIVE STRENGTH (psf) a a m gi BLOW COUNT SAMPLE GRAPHIC LOG Water Level and Depth of Cave (ft) BULK C z, G ELEVATION(ft) MATERIALDESCRIPTION DEPTH(ft) SAND, clayey, lean, slightly moist, dark brown, predominantly fine ` - grained, SC. - - 4752 4 SAND, poorly graded, slightly moist to wet, yellow brown to fight brown, -5 - SP. — - —10 - - '.4. - - -15- - - - - Z -20- �; - - - -25- : - - \_ _ _ _ -36- .'.'. - - -35- - - LEGEND WATER LEVEL AT TIME OF DRILLING MODIFIED CALIFORNIA SAMPLER A # WATER LEVEL # DAYS AFTER DRILLING ' ROCK CORE 4# DEPTH OF CAVE # DAYS AFTER DRILLING r� C N N I C A L i DEPTH OF REFUSAL ST E E R V I C E S PROJECT NAME Meining Site, Gilcrest PROJECT NUMBER 23.3058 BORING LOCATION See Figure 2 BORING ELEVATION 4756 ft. DRILLING COMPANY/RIG Dakota Drilling/D-120 CMT REP. E. Castle DRILLING METHOD 8.25in. Diameter HSA and NX Wireline Core DATE STARTED 12/18/2023 HAMMER SYSTEM Rope & Cathead DATE COMPLETED 12/18/2023 lT_S6 .J 1 JV Page 2 of 2 DEPTH (ft) NATURAL DRY DENSITY (pcf) NATURAL MOISTURE CONTENT (%) to LL LL -PL -PI UNCONFINED COMPRESSIVE STRENGTH (pa) c a re r oC ° BLOW COUNT SAMPLE GRAPHIC LOG eLEVATiON (ft) MATERIAL DESCRIPTION DEPTH [IL) r Water Level and Depth of Cave (ft) DRIVE m -45- `:� - - -50 - - - .:: :::•••.: - 1 -55 - -- _ _ 'i'• x x 4699 57 SILTSTONE, very hard, thinly to thickly bedded, slightly fractured to - x x x x fresh, moderately to slightly weathered, moist, gray. - x x x x - N50/2r'~ —60- x x x — x x _ _ L17.3 13.6 86 36-25-11 48,150 37/33 — x x x x x x x x x x _ —65- x x x x - - - _ H x - 93/87 K x ^ - - x x x x - - - - x x x x _ _ — x x x x - - —70- x x x x — - L - 92/73 x x x x x x - - - - x x x x - - - x x v 4682 74 - - Boring terminated at 74 feet LEGEND i WATER LEVEL AT TIME OF DRILLING B MODIFIED CALIFORNIA SAMPLER # WATER LEVEL # DAYS AFTER DRILLING ' ROCK CORE '# DEPTH OF CAVE # DAYS AFTER DRILLING �- T E C iH N 1 C A L 1 DEPTH OF REFUSAL'SERVICES PROJECT NAME Meining Site, Gilcrest PROJECT NUMBER 23.3058 BORING LOCATION See Figure 2 BORING ELEVATION 4756 ft. DRILLING COMPANY/RIG Dakota Drilling/Diedrich 120 CMT REP. E. Castle DRILLING METHOD 8.25in. Diameter HSA DATE STARTED 12/8/2023 HAMMER SYSTEM Rope & Cathead DATE COMPLETED 12/8/2023 I J _ JTS7 Page 1 of 2 DEPTH (ft) BLOW COUNT SAMPLE u x ga g ELEVATION (ft) MATERIAL DESCRIPTION DEPTH (ft) i Water Level and Depth of Cave (ft) • o BULK SAND, clayey, lean, slightly moist, dark brown, predominantly fine grained, SC. _ _ —5 - 4752 ( SAND, poorly graded, occasional fine gravel, slightly moist to wet, light to yellow to orange brown, predominantly fine grained, SP. - — - _ _ F - —10- - - -15- - - - - .• - - -20- Y -25- - - -30- --35- - - LEGEND WATER LEVEL AT TIME OF DRILLING @ SPLIT SPOON V# WATER LEVEL # DAYS AFTER DRILLING ® MODIFIED CALIFORNIA SAMPLER *# DEPTH OF CAVE # DAYS AFTER DRILLING t'T H fir' ^ w L EE C 1 DEPTH OF REFUSAL ST E R V I C E$ PROJECT NAME BORING LOCATION DRILLING COMPANY/RIG DRILLING METHOD HAMMER SYSTEM Meining Site, Gilcrest See Figure 2 Dakota Drilling/Diedrich 120 8.25in. Diameter HSA Rope & Cathead PROJECT NUMBER BORING ELEVATION CMT REP. DATE STARTED DATE COMPLETED 23.3058 4756 ft. E. Castle 12/8/2023 12/8/2023 JT-S7 Page 2 of 2 SAMPLE 8 ELEVATION (ft) MATERIAL DESCRIPTION DEPTH (ft) '0 yy t 3g —45- - 50- - 55- 50/8 XC --60- r 1„4,99 .... 00.• ...• 0..• 0000 ...• 0000 0000 . .. 0000 ...• ...• .... ...• 0000 0000 5015 —65 50 4691/5 SANDSTONE, silty, hard, moist, gray, fine grained. Boring terminated at 65 feet 57 65 LE END 1 WATER LEVEL AT TIME OF DRILLING O# WATER LEVEL # DAYS AFTER DRILLING —# DEPTH OF CAVE # DAYS AFTER DRILLING 1 DEPTH OF REFUSAL ® SPLIT SPOON H MODIFIED CALIFORNIA SAMPLER CmT$ ECHNI CAL PROJECT NAME Meining Site, Gilcrest PROJECT NUMBER 23.3058 BORING LOCATION See Figure 2 BORING ELEVATION 4757 ft. DRILLING COMPANY/RIG Dakota Drilling/CME 75 CMT REP. E. Castle DRILLING METHOD 8.25in. Diameter HSA DATE STARTED 12/12/2023 HAMMER SYSTEM Automatic Hammer DATE COMPLETED 12/12/2023 lT_ JT-S8 J(7 S8 Page 1 of 2 DEPTH (ft) NATURAL DRY DENSITY (pd) NATURAL MOISTURE CONTENT (%) LL -PL -PI BLOW COUNT SAMPLE GRAPHIC LOG Water Level and Depth of Cave (ft) 0 in DRIVE BULK ELEVATION (ft) MATERIAL DESCRIPTION DEPTH (ft) SAND, clayey, poorly graded, lean, loose to medium dense, slightly moist, brown to light Y brown, predominantly fine grained, SC. - - 9/12 Di _ _ 1 4754 3 SAND, poorly graded, medium dense to dense, slightly moist to wet, yellowish tan to light - - brown, fine grained, SP. - —5- 13/12 _ _ —10- 17/12 4 - - - t- _ r;• - —15- 32/12 N -- : __ H 116.1 9.9 2 NV -NV -NP 22/12 —20 -�5-- 33/12 H ` ^ --30- 36/12 _ _ _35- _ 21/12 - - - 0/ LEGEND WATER LEVEL AT TIME OF DRILLING e MODIFIED CALIFORNIA SAMPLER a# WATER LEVEL # DAYS AFTER DRILLING II STANDARD PENETRATION TEST -'# DEPTH OF CAVE # DAYS AFTER DRILLING CMT E C H N I C A L 1 DEPTH OF REFUSAL S ER VICES PROJECT NAME Meining Site, Gilcrest PROJECT NUMBER BORING LOCATION See Figure 2 BORING ELEVATION DRILLING COMPANY/RIG Dakota Drilling/CME 75 CMT REP. DRILLING METHOD 8.25in. Diameter HSA DATE STARTED HAMMER SYSTEM Automatic Hammer DATE COMPLETED 23.3058 4757 ft. E. Castle 12/12/2023 12/12/2023 lT_ S8 JT-S8 .70 Page 2 of 2 NATURAL DRY DENSITY (pcf) NATURAL MOISTURE CONTENT (%) LL -PL -PI BLOW COUNT SAMPLE GRAPHIC LOG Water Level and Depth of Cave (ft) F a DRIVE QELEVATION (ft) MATERIAL DESCRIPTION DEPTH (ft) • -45- - - 30/12 :* 83/12 -50- - - L.55- 48/12 _• 4698 59 ILT/8---"X limill . CLAYSTONE, hard to very hard, moist, grey. — — �■ — — — _ tii -4692.7 64.3- - X50/3 Boring terminated at 64.3 feet LEGEND 1 WATER LEVEL AT TIME OF DRILLING e MODIFIED CALIFORNIA SAMPLER �# WATER LEVEL # DAYS AFTER DRILLING m STANDARD PENETRATION TEST -►# DEPTH OF CAVE # DAYS AFTER DRILLING T E ^ H fir' ^ A L 1 DEPTH OF REFUSAL �17 S E R V I C E$ PROJECT NAME Meining Site, Gilcrest PROJECT NUMBER 23.3058 BORING LOCATION See Figure 2 BORING ELEVATION 4757.5 ft. DRILLING COMPANY/RIG Dakota Drilling/DEERE 85G CMT REP, E. Castle DRILLING METHOD 8.25in. Diameter HSA and MX Wireline Core DATE STARTED 12/19/2023 HAMMER SYSTEM Rope & Cathead DATE COMPLETED 12/19/2023 'IT_C[1 .J 1 J7 Page 1 of 2 DEPTH (ft) NATURAL DRY DENSITY (pcl) NATURAL MOISTURE CONTENT (^/o) LL -PL -PI UNCONFINED COMPRESSIVE STRENGTH (psI) BLOW COUNT SAMPLE GRAPHIC LOG Water Level and Depth of Cave (ft) 0 a m DRIVE BULK 1:')e LL aC ELEVATION (ft) MATERIAL DESCRIPTION DEPTH (ft) SAND, clayey, lean, slightly moist, dark brown, predominantly fine grained, SC. - - _ _ 4753.5 4 J SAND, poolry graded, occasional gravel, slightly moist to wet, light — 5 - brown, SP. — - —10- — - —15- — - .L —20- i— - - _ C•: _ - —25- — —30- — —35- — -- - - LEGEND i WATER LEVEL AT TIME OF DRILLING H MODIFIED CALIFORNIA SAMPLER # WATER LEVEL # DAYS AFTER DRILLING I ROCK CORE -# DEPTH OF CAVE # DAYS AFTER DRILLING T C ^ H1^ A L riT t DEPTH OF REFUSAL S E R V I C E S PROJECT NAME Meining Site, Gilcrest PROJECT NUMBER 23.3058 BORING LOCATION See Figure 2 BORING ELEVATION 4757.5 ft. DRILLING COMPANY/RIG Dakota Drilling/DEERE 85G CMT REP. E. Castle DRILLING METHOD 8.251n. Diameter HSA and NX Wireline Core DATE STARTED 12/19/2023 HAMMER SYSTEM Rope & Cathead DATE COMPLETED 12/19/2023 I J7 S9 _ JT Page 2 of 2 DEPTH (ft) NATURAL DRY DENSITY (pcf) NATURAL MOISTURE CONTENT (%) w LL -PL -PI UNCONFINED COMPRESSIVE STRENGTH (psf) Recovery/RQD (^/o/%) BLOW COUNT SAMPLE GRAPHIC LOG ELEVATION (ft) MATERIAL DESCRIPTION DEPTH (R) Water Level and Depth of Cave (ft) O 1 BULK —45_ --50 - —55- - I.....w4683,5 •Gravel •:4700.5 57 _ — - — to 2". CLAYSTONE, thinly to thicklly bedded, slightly to moderately fractured, slightly weathered to fresh, very hard, moist, gray. 74 - - - - — - - - - — - —60- _ _ 119 13.8 86 38-23-15 50,010 85/75 �50/3 , - - -65- —70- 100/90 93/82 Boring terminated at 74 feet i Q# -o# 1 LEGEND AT TIME OF DRILLING # DAYS AFTER DRILLING # DAYS AFTER DRILLING e MODIFIED CALIFORNIA SAMPLER ROCK CORE tin, N T E C H N I C A L S E RV IIC E S WATER LEVEL WATER LEVEL DEPTH OF CAVE DEPTH OF REFUSAL ' PROJECT NAME Meining Site, Gilcrest PROJECT NUMBER 23.3058 BORING LOCATION See Figure 2 BORING ELEVATION 4759 ft. DRILLING COMPANY/RIG Dakota Drilling/CME 75 CMT REP. J. Edwards DRILLING METHOD 8.25in. Diameter HSA DATE STARTED 12/14/2023 HAMMER SYSTEM Automatic Hammer DATE COMPLETED 12/14/2023 .J lT0 S i _ I J 1 Page 1 of 2 DEPTH (ft) BLOW COUNT SAM PIE GRAPHIC LOG ELEVATION (ft) MATERIAL DESCRIPTION DEPTH (ft) Water Level and Depth of Cave (ft) p BULK 7 SAND, clayey, moist, dark brown, SC. - - _ 4757 2 - CLAY, sandy, lean, moist, dark brown, CL. —5 - -4753.5 5.5- - SAND, poorly graded, with gravel to 1", slightly moist to wet, brown, SP. - - —10- — - —15- — - - _ —20 - — - - - i_ _ —25- - - - - ,.•. _ _ -30 - - - -35- - - LEGEND 1 WATER LEVEL AT TIME OF DRILLING ® MODIFIED CALIFORNIA SAMPLER # WATER LEVEL # DAYS AFTER DRILLING -.# DEPTH OF CAVE # DAYS AFTER DRILLING 1 DEPTH OF REFUSAL cm -1-r T E ^ H1 $ E R V 1 ^ A L C E$ PROJECT NAME Meining Site, Gilcrest PROJECT NUMBER 23.3058 BORING LOCATION See Figure 2 BORING ELEVATION 4759 ft. DRILLING COMPANY/RIG Dakota Drilling/CME 75 CMT REP. J. Edwards DRILLING METHOD 8.25in. Diameter HSA DATE STARTED 12/14/2023 HAMMER SYSTEM Automatic Hammer DATE COMPLETED 12/14/2023 1- 0 .J 1 .S i 71 Page 2 of 2 BLOW COUNT SAMPLE GRAPHIC LOG ELEVATION (ft) MATERIAL DESCRIPTION DEPTH (ft) Water Level and Depth of Cave (ft) DRIVE m - -45 -1 —50- - H —55- _ —60— ell 0.• • ••4699 With gravel to 3". GO — - x x x x x x x x x x x x x x x x v V SILTSTONE, clayey, very hard, very moist, brown to gray. 4493.7 G5.3— _ - X0/4 --65�75/3at f Boring terminated at 65.3 feet 1 Q# -.# 1 LEGEND AT # DAYS CAVE # REFUSAL r�'TT E C H N I C A L S E R V I C E S WATER LEVEL WATER LEVEL DEPTH OF DEPTH OF TIME OF DRILLING A MODIFIED CALIFORNIA SAMPLER AFTER DRILLING DAYS AFTER DRILLING PROJECT NAME Meining Site, Gilcrest PROJECT NUMBER 23.3058 BORING LOCATION See Figure 2 BORING ELEVATION 4759.5 ft. DRILLING COMPANY/RIG Dakota Drilling/CME 75 CMT REP. E. Castle DRILLING METHOD 8.25in. Diameter HSA DATE STARTED 12/15/2023 HAMMER SYSTEM Automatic Hammer DATE COMPLETED 12/15/2023 'ITS i i _ J 1 .71 1 Page 1 of 2 NATURAL DRY DENSITY (pct) NATURAL MOISTURE CONTENT (%) LL -PL -PI BLOW COUNT SAMPLE GRAPHIC LOG Water Level and Depth of Cave (ft) g e BULK W G G ELEVATION (It) MATERIAL DESCRIPTION DEPTH (IL) - - SAND, poorly graded, with gravel from 24', very loose to very dense, slightly moist to wet, light brown, predominantly fine grained, SP. - - 6/12 ; : - 20/12 -5 - - I- -f0� 25/12 - ` • 27/12 -15- r - - 31/12 -20 -. - :i. L-25- 39/12 .'; . - w- - 50/11 -30- - - - - /j - � 50/7. r-35 - - - 50/11 LEGEND 1 WATER LEVEL AT TIME OF DRILLING ® MODIFIED CALIFORNIA SAMPLER # WATER LEVEL # DAYS AFTER DRILLING 1 STANDARD PENETRATION TEST - ►# DEPTH OF CAVE # DAYS AFTER DRILLING fir' ^ A C1 � T E H L 1 DEPTH OF REFUSAL S E R V' C E S PROJECT NAME Meining Site, Gilcrest PROJECT NUMBER 23.3058 BORING LOCATION See Figure 2 BORING ELEVATION 4759.5 ft. DRILLING COMPANY/RIG Dakota Drilling/CME 75 CMT REP. E. Castle DRILLING METHOD 8.25in. Diameter HSA DATE STARTED 12/15/2023 HAMMER SYSTEM Automatic Hammer DATE COMPLETED 12/15/2023 i i lT_ J 1 J 1 1 S Page 2 of 2 DEPTH (ft) NATURAL DRY DENSITY (pcI) NATURAL MOISTURE CONTENT (%) LL -PL -PI BLOW COUNT SAMPLE GRAPHIC LOG Water Level and Depth of Cave (ft) 2 w" rDRIVE g ELEVATION (ft) MATERIAL DESCRIPTION DEPTH (h) 'i L'. H - - 50/8 -45- - - 32/12 H i':' - -50- - - _ - -1 118.6 7.8 2 NV -NV -NP 50/10 N -55 - - - C:: _ _ _ F - 39/12 - 2 -60- - - 7 - - -65- 50/12 e •.'.• - - - _ 4691.5 68 CLAYSTONE, very hard, moist, yellowish tan to light brown to gray. - = - 50/3 -70- r� - — _ _ - - - Ell - - 74.2_ \56/2%_4685.3 Boring terminated at 74.2 feet _ LEGEND Z WATER LEVEL AT TIME OF DRILLING e MODIFIED CALIFORNIA SAMPLER Q# WATER LEVEL # DAYS AFTER DRILLING 1 STANDARD PENETRATION TEST 4# DEPTH OF CAVE # DAYS AFTER DRILLING r�� T E C H N I C A L 1 DEPTH OF REFUSAL S E R V IC E S PROJECT NAME Meining Site, Glcrest PROJECT NUMBER 23.3058 BORING LOCATION See Figure 2 BORING ELEVATION 4760 ft. DRILLING COMPANY/RIG Dakota Drilling/Diedrich 120 CMT REP. E. Castle DRILLING METHOD 8.25in. Diameter HSA and NX Wireline Core DATE STARTED 12/21/2023 HAMMER SYSTEM Rope & Cathead DATE COMPLETED 12/21/2023 _ JTSi 2 I 1 Page 1 of 2 DEPTH (ft) NATURAL DRY DENSITY (pcfl NATURAL MOISTURE CONTENT (%) I M a J UNCONFINED COMPRESSIVE STRENGTH (psf) a rc F1 O2 BLOW COUNT 'SAMPLE GRAPHIC LOG Water Level and Depth of Cave (ft) BULK 1 LL C O ELEVATION (ft) MATERIAL DESCRIPTION DEPTH (h), - - SAND, clayey, lean, slightly moist, dark brown, predominantly fine grained, SC. - - _ — -075G 4 _ 5 SAND, poorly graded, slightly moist to wet, light brown, SP. - - -10- p•' -15- _ _ - - _ - -20- _ _ -25- - - -30- •:: _ _ -35_ - - LEGEND y WATER LEVEL AT TIME OF DRILLING ® MODIFIED CALIFORNIA SAMPLER Q# WATER LEVEL II DAYS AFTER DRILLING ril ROCK CORE --.# DEPTH OF CAVE It DAYS AFTER DRILLING IQ NO RECOVERY 1 DEPTH OF REFUSAL 'MT1: E RV IC A L 1: E R V I C E R PROJECT NAME Meining Site, Gilcrest PROJECT NUMBER 23.3058 BORING LOCATION See Figure 2 BORING ELEVATION 4760 ft. DRILLING COMPANY/RIG Dakota Drilling/Diedrich 120 CMT REP. E. Castle DRILLING METHOD 8.25in. Diameter HSA and NX Wireline Core DATE STARTED 12/21/2023 HAMMER SYSTEM Rope & Cathead DATE COMPLETED 12/21/2023 lT_Si 2 .J J 1 Page 2 of 2 DEPTH (ft) NATURAL DRY DENSITY (pct.) NATURAL MOISTURE CONTENT (%) LL -PL -PI UNCONFINED COMPRESSIVE STRENGTH (psf) Recovery/RQD SAMPLE GRAPHIC LOG Water Level and Depth of Cave (ft) 8 DRIVE BULK In g ELEVATION (ft) MATERIAL DESCRIPTION DEPTH (ft) - »45 - `•: - - -50- *' - - -55- - - -- - L _ —60 — - - (1699 61 - - CLAYSTONE, silty, very hard, slightly weathered, moderately hard, thin to moderate bedding, very tight fracture spacing, moist, gray. - - - �� -65 — -- -- . 118.5 13.7 67 37-24-13 60,400 97/92 ■— - - _ - - -70 - - - - - � - 87/77 - - _ _ � . -75- - -- - I. ` -- - - - 80/65 4680 e0 LEGEND Boring terminated at 80 feet WATER LEVEL AT TIME OF DRILLING ® MODIFIED CALIFORNIA SAMPLER Q# WATER LEVEL # DAYS AFTER DRILLING ' ROCK CORE -0# DEPTH OF CAVE # DAYS AFTER DRILLING IC) NO RECOVERY T E C H N I C A L CMTI" 1 DEPTH OF REFUSAL S E R V IC E S PROJECT NAME Meining Site, Gilcrest PROJECT NUMBER 23.3058 BORING LOCATION See Figure 2 BORING ELEVATION 4761 ft. DRILLING COMPANY/RIG Dakota Drilling/CME 75 CMT REP. J. Edwards DRILLING METHOD 8.25in. Diameter HSA DATE STARTED 12/14/2023 HAMMER SYSTEM Automatic Hammer DATE COMPLETED 12/14/2023 I J 1 S i _ JT3 Page 1 of 2 DEPTH (ft) LL -PL -PI BLOW COUNT SAMPLE GRAPHIC LOG Water Level and Depth of Cave (ft) W pELEVATION fBULK 1 (R) MATERIAL DESCRIPTION DEPTH (ft) N -- —• - CLAY, sandy, stiff, moist, brown to gray, CL. 12/12 _ - 4756 5 , f — 5 _ -10 13/12 .=rY SAND, poorly graded, with gravel to 1", medium to very dense, slightly moist to wet, brown, fine grained, SP. - - - ` -' 34/12 - X •••••••• l -15- _ _ Y - „ _ 22/12X -20- - -- 30/12 'r JC :•' • - -- _ 25 _ „ NV -NV -NP 30/12 x 7 .': -30- ..'. - - 26/12 _ _ X :*:**.• _ -35- _ •.: - - _ _ 34/12 LEGEND 1 WATER LEVEL AT TIME OF DRILLING B MODIFIED CALIFORNIA SAMPLER Q# WATER LEVEL # DAYS AFTER DRILLING ® SPLIT SPOON -# DEPTH OF CAVE # DAYS AFTER DRILLING T E C H N I C A L 1 DEPTH OF REFUSAL S E RV IC E S PROJECT NAME Meining Site, Gilcrest PROJECT NUMBER 23.3058 BORING LOCATION See Figure 2 BORING ELEVATION 4761 ft. DRILLING COMPANY/RIG Dakota Drilling/CME 75 CMT REP. J. Edwards DRILLING METHOD 8.25in. Diameter HSA DATE STARTED 12/14/2023 HAMMER SYSTEM Automatic Hammer DATE COMPLETED 12/14/2023 lT _ i 3 J J 1 J S Page 2 of 2 LL -PL -PI BLOW COUNT SAMPLE GRAPHIC LOG 8 DRIVE 1 BULK A y t. p ELEVATION (ft) MATERIAL DESCRIPTION DEPTH (ft) 3g _ _ 36/12 7C _ _ —45- — - 50/12 _ _ ' '. _ _ r50 _ 60/12 ; 28/12 - - • 4702 59 CLAYSTONE, very hard, very moist, brown. -60^ 50/5�S 64.3— — —4696.7 �50/4jai Boring terminated at 64.3 feet LE END 1 WATER LEVEL AT TIME OF DRILLING B MODIFIED CALIFORNIA SAMPLER V# WATER LEVEL # DAYS AFTER DRILLING SPLIT SPOON -'# DEPTH OF CAVE # DAYS AFTER DRILLING �� T E C H N I C L 1 DEPTH OF REFUSAL S E R V I C E S APPENDIX E LIJ&T Consulting, Inc. Central Colorado Water Conservancy District — Sweet Valley Pit Slope Stability Analysis O O ((00 N GO 0 (0 �(0't CO N (D N 0 CO (0 N 0 CO N a- r ENVIRONMENTAL CONSULTANTS I 2r3s Sound Science. Creative Solutions.' To: ?tae 295 Interlocken Boulevard, Suite 300 Broomfield, Colorado 80021 Tel 303.487.1 183 www.swca.com TECHNICAL MEMORANDUM J. C. York J -T Consulting, Inc. 305 Denver Avenue, Suite D Fort Lupton, Colorado 80621 From: Brady Nelson, SWCA Cultural Resources Specialist Melanie Medeiros, M.A., RPA, SWCA Cultural Resources Principal Investigator Date: January 23, 2024 Re: Cultural Resource Support for the Meining Property Gravel Mining Project in Weld County, Colorado / SWCA Project No. 84816 J -T Consulting, Inc. contracted SWCA Environmental Consultants (SWCA) to conduct a cultural resource review and reconnaissance survey to support the proposed Meining Property Gravel Mining Project (project). The project includes approximately 160 acres of agricultural land in the NE'/4 of Section 30 of Township (T) 4 North (N), Range (R) 66 West (W). The project consists of the new construction of a gravel mining pit on an approximately 160 -acre lot (Parcel No. 105730100039, 105730100042, and 105730100040, hereafter referred to as the project area), west of Gilcrest, Colorado, on agricultural, exempt, and residential land owned by the Central Colorado Water Conservancy District and Brent and Fawn Graybill (Figures 1 and 2). Development of the proposed gravel mining pit will be subject to permitting through both Weld County and the State of Colorado. The purpose of the review and reconaissance survey is to assess the project area for the presence of archaeologically and potentially sensitive cultural areas to assist J -T Consulting, Inc. and the project proponent in determining if any pre-existing cultural resource issues may impact the project and to support both county -level and state -level project permitting. This technical memorandum provides a description of the project area and land use, the methods used by SWCA cultural resources specialists to complete the review and reconnaissance survey, a summary of the results of the review and the reconnaissance survey, and recommendations as they relate to the proposed project. PROJECT AREA AND LAND USE The project area is approximately 1.75 miles west of Gilcrest, Weld County, Colorado, in the northeast quadrant of Section 30 of T4N, R66W as depicted on the 1970 U.S. Geological Survey (USGS) Milliken, Colorado, 7.5 -minute quadrangle (see Figures 1 and 2). The majority of the project area consists of a flat and roughly circular tilled and fallow agricultural field on the T3 terrace of the South Platte River (Figure 3), which is intersected by east -west and northeast -trending sections of the Western Mutual Ditch (Figure 4) and farmsteads in the northern and southeastern sections of the project area. Outside of the agricultural field, vegetation primarily consists of invasive and noxious weeds and short to medium grasses. Bare ground visibility ranges between 0 and 70 percent with an average of 25 percent. Cultural Resource Support for the Meining Property Gravel Mining Project in Weld County, Colorado 4 we47ll J z Huro4. • 19 0 71 rCIr 4718? 4.7.5 • N Well 475 4754 ' 0 1 W 9 °ll 47e MEINING PROPERTY GRAVEL MINING PROJECT Project Location - Topographic Map I Project Area Section Boundary Township/ Range Boundary Weld County, CO USGS 7.5' Quadrangle: Milliken, CO (1970) T4N R66W Section 19,30 NAD 1983 UTM Zone 13N 40.2878°N 104.8159°W Base Map: Esri ArcGIS Online, accessed November 2023 Updated: 11/27/2023 Project No 84816 LayouI: 64616 projectArea_Topo Aprx: 6_me in ing ProperyGravelMinl ngProject 0 1,000 2,000 IMP=IFeet Meters 0 250 500 N A 1:24,000 CA INVIEONMENTAL CONSULTANTS Figure 1. Project location. 2 Cultural Resource Support for the Meining Property Gravel Mining Project in Weld County, Colorado MEINING PROPERTY GRAVEL MINING PROJECT Project Location - Aerial Map 0 1,060 2,000 f ccl 0 250 500 Project Area I —I Section Boundary Township/ = Range Boundary Weld County, CO USGS 7.5' Quadrangle: Milliken, CO (1970) T4N R66W Section 19,30 NAD 1983 UTM Zone 13N 40.287°N 104.8164°W Base Map: Ear ArcGl5 Online, accessed November 2023 Updated: 11/27/2023 Project No 04816 Layout: 64816_projectArea_Aerial Aprx• 6_me:n Ing PropertyG ravelM ml ngProjecl N A 1:24,000 CA INVIIONMINTAL CONSULTANTS Figure 2. Aerial view of project location. 3 Cultural Resource Support for the Meining Property Gravel Mining Project in Weld County, Colorado One of highest terraces in the Platte River system was termed T3 by geomorphologists because it is the third terrace above the modern level of the river. This terrace is known as the Kersey Terrace on the south side of the river and as the Pleasant Valley Terrace on the north side. This terrace is notable for the high level of glacial gravels mixed with the alluvial sediments deposited during the Pleistocene Pinedale Monarch Glaciation, about 12,000 years before present (McFaul et al. 1994). According to Holliday (1987) and McFaul et al. (1994), among others, the surface of the T3 is characterized by gravel ridges and channels, a result of braided channels of the South Platte River as it deposited glacial outwash materials. Much of this landscape has been flattened by historic agricultural activities. Five soil map units are documented in the project area: Altvan loam, 0 to 1 percent slopes; Ascalon loam, 0 to 1 percent slopes; Julesburg sandy loam, 0 to 1 percent slopes; Olney fine sandy loam, 0 to 1 percent slopes; and Otero sandy loam, 0 to 1 percent slopes (Natural Resources Conservation Service [NRCS] 2023). Soils in the Project area are predominantly loam and sand of alluvial or eolian deposition that occur on either terraces or plains on 0 to 1 percent slopes; these soils are deep (60 to < 80 inches) and well drained. These soil units vary in their development with very weakly to very well -developed soils present and are derived from a variety of parent materials, including South Platte River alluvium, old alluvium, mixed deposit outwash, and wind -reworked alluvium and/or calcareous sandy eolian deposits. Ascalon loam, 0 to 1 percent slopes, which is concentrated in the western portion of the project area, contains an Ap horizon, indicating that this soil unit has been impacted by agriculture. Altvan loam, 0 to 1 percent slopes, are derived from old alluvium that likely predates human settlement in North America. These soils are in a small area along the west boundary of the project area. Figure 3. Overview of the project area from the northwest corner; view facing southeast. 4 Cultural Resource Support for the Meining Property Gravel Mining Project in Weld County, Colorado Figure 4. East -west trending section of the Western Mutual Ditch; view facing east. METHODS In November 2023, SWCA requested a file search and literature review of the project area through the Colorado Office of Archaeology and Historic Preservation to identify records for all previously conducted cultural resource surveys and all previously identified cultural resources within the project area and the Public Land Survey System (PLSS) sections bordering the project area. In addition, SWCA conducted background research that included examination of historical topographic maps, aerial imagery, and geological and soils data for the project area to identify land use patterns and natural features that may signify areas with the potential for archaeological/cultural resources. Following completion of this background research, on November 15, 2023, SWCA archaeologists Stephanie Slaughter, Ross Campbell, and Brady Nelson completed a reconnaissance survey of the project area to identify cultural resources and potential impacts the project may have on those resources. RESULTS File Search and Literature Review Results of the file search and literature review indicate that seven cultural resource inventories have been previously conducted in PLSS sections within 1 mile of the project area (Table 1). Two previous inventories intersect the project area, MC.AE.R24 and WL.SC.NR2; the remaining inventories were conducted within 1 mile of the project area. Two of these inventories were conducted for pipeline projects, two were conducted for well pad projects, one was conducted for the Colorado Department of Transportation, and two were conducted for projects of miscellaneous type. 5 Cultural Resource Support for the Meining Property Gravel Mining Project in Weld County, Colorado Table 1. Previously Conducted Cultural Resource Inventories within the File Search Area OAHP ID Year Title Author(s) Contractor MC.AE.R24* 2009 Suncor Energy (U.S.A.) Pipeline Company Rocky Mountain Crude System Expansion Pipeline Project: Class III Cultural Resource Inventory Laramie County, Wyoming and Weld and Adams Counties, Colorado Gantt, Erik, Stephen R. Anderson, and Inc. Kristin A. Gensmer Centennial Archaeology, WL.SC.NR2* 2007 Weld Limited Results Cultural Resource Survey Rogers, Carolyn NRCS Report on Private Land WL.SC.NR3 2007 Weld County Limited Results Cultural Rogers, Carolyn NRCS Resource Survey Report on Private Lands WL.LM.R32 2015 PDC Energy Wiedeman Trust, Wiedeman F, Trust, Hunt, and Tarin Wells Pads, Weld County, Colorado: Results of an Intensive Cultural Resources Inventory (BLM# CR-RG- 15-71 P) Fariello, Juston URS Group, Inc. WL.CH.NR40 2006 An Intensive Archaeological Resource Inventory along US Highway 85 South of La Salle, Weld County, Colorado (STA 0853-057 US 85) Hand, O. D. Colorado Department of Transportation WL.E.R10 2002 Colorado Interstate Gas Company's Front Range Pipeline Intensive Inventory for Cultural Resources, Weld County, Colorado (Original and Addendum) Barclay, Dulaney Metcalf Archaeological and Michael D. Consultants Metcalf WL.LM.R92 2023 A Class III Cultural Resource Inventory for PDC DeSanto, Carly M. SWCA Energy's Bubba Federal APD Project, Weld County Colorado (BLM#: CR-RG-23-033 P) Note: Asterisk indicates project overlaps with current project area. As a result of these inventories, 16 cultural resources were previously recorded in the PLSS sections within 1 mile of the project area, including three precontact resources and 13 historic resources (Table 2). The three previously recorded precontact resources include one isolated find and two open camps, all of which are north of the South Platte River and to the northwest of the project area, approximately 1.5 miles away. Of these precontact resources, one of the open camps (5WL2610) needs more data for a National Register of Historic Places (NRHP) eligibility recommendation, and the second open camp and isolated find have been recommended not eligible for the NRHP. The 13 previously recorded historic resources include four ditch segments, two highway segments, two railroad segments, one artifact concentration, one bridge, one ditch, one road segment, and one isolated find (see Table 2). Previously recorded segments of the Union Pacific Railroad, Farmers Independent Ditch, and U.S. Highway 85 support the eligibility for each linear resource's overall eligibility, whereas the segments of State Highway 60 and the Meining Lateral or Wiedeman Well Feeder Ditch are non - supporting of each resource's overall eligibility. Ten of the remaining historic resources are recommended not eligible or is officially not eligible for the NRHP and one is recommended as needing more data before an eligibility assessment can be made. Only one resource, 5WL2750.4, a segment of the Western Mutual Ditch, intersects the project area. The segment has been recommended not eligible for the NRHP. Four of the previously recorded resources are in the immediate vicinity of the project area. These include 5WL5037.2, a segment of State Highway 60, and 5WL3052, Hewes Ditch Bridge — Wel025.5-040.0A, which are directly adjacent to the project area on the southeast corner and the western edge of the project area, respectively, and 5WL7729.1, a segment of the Meining Lateral or Wiedeman Well Feeder Ditch, and 5LW5037.2, a segment of State Highway 60, which are near the southeast corner of the project area. 6 Cultural Resource Support for the Meining Property Gravel Mining Project in Weld County, Colorado Of note, the Kersey Terrace has also yielded several of the earliest sites in Weld County, including the Frazier Site (Agate Basin) (5WL268), Klein site (Clovis) (5 WL 1368), Jurgens Site (Cody complex) (5WL53), and Powars site (Folsom) (5WL1369), all of which are within 15 miles of the project area. Table 2. Previously Recorded Cultural Resources within the File Search Area Resource Number Resource Name Temporal Affiliation Resource Type NRHP Eligibility on Record 5WL1031.3 Denver, Laramie & Historic Northwestern Railroad Railroad segment Officially not eligible 5WL1969.86 Union Pacific Railroad (Denver Historic Pacific Railway and Telegraph Company) Railroad segment Supports eligibility of entire linear resource 5WL2589.5 Farmers Independent Ditch Historic Ditch segment Field not eligible 5WL2589.7 Farmers Independent Ditch Historic Ditch segment Supports eligibility of entire linear resource 5WL2609 Precontact Isolated find Field not eligible 5WL2610 Precontact: Early Ceramic, Plains Woodland Open camp Field needs data 5WL2750.4* Western Mutual Ditch Historic Ditch segment Field not eligible 5WL3052 Hewes Ditch Bridge — Historic Wel025.5-040.0a Bridge Field not eligible 5W3177 Historic Isolated find Field not eligible 5WL3179 Precontact Open camp Field not eligible 5WL5037.2 State Highway 60 Historic Highway segment Does not support eligibility of entire linear resource 5WL6867.10 U.S. Highway 85 Historic Highway segment Supports eligibility of entire linear resource 5WL7729.1 Meining Lateral or Wiedeman Historic Well Feeder Ditch Ditch segment Does not support eligibility of entire linear resource 5WL7730 Salamanca Well Feeder Ditch Historic Ditch Field not eligible 5WL7731 Historic Artifact concentration Officially not eligible 5WL8120.5 Weld County Road 38 Historic Road segment Officially not eligible Note: Asterisked resource intersects the current project area. Historic Map and Aerial Images Review Additionally, SWCA reviewed historic maps for features that may be present within the project area (Table 3). Sources reviewed include General Land Office (GLO) plats through the Bureau of Land Management (BLM) website (BLM 2023), USGS quadrangles using the National Geologic Map Database (USGS 2023), and historic aerial imagery from NETROnline (2023). Available GLO plats that include the project area are listed in Table 3. The earliest available plat dates to 1863, and no features are visible in Section 30, T4N, R66W where the project area is located. The 1865 plat depicts an unimproved road oriented southwest -northeast that intersects the northeast quarter of Section 30 at the center of its southern and eastern edges. The 1869 plat does not provide details for 7 Cultural Resource Support for the Meining Property Gravel Mining Project in Weld County, Colorado Section 30, T4N, R66W and depicts no features, with the primary focus being the Denver Pacific Railway to the east of the project area. Historical USGS quadrangles available for the project area are listed in Table 3. The earliest available quadrangle is the 1902 Greeley, Colorado, 1:125,000 -scale quadrangle, which depicts an unnamed ditch intersecting the project area and improved roads to the west, north, and east of the project area, along with three structures outside the project area but within Section 30. Gilcrest had not yet been founded, but the Union Pacific, Denver and Cheyenne Line is depicted running through Platteville, Nantes, and La Salle to the east. The 1950 and 1951 Milliken, Colorado, 1:24,000 -scale quadrangles depict the Western Mutual Ditch intersecting the project area, along with improved roads to the west and north. State Highway 60 is depicted directly to the east of the project area, and structures and unimproved roads associated with a farmstead are shown in the southeast corner of the project area. A well is immediately to the south of the project area in the southwest corner of Section 30. The remaining Greeley, Colorado, 1:250,000 -scale quadrangles date to 1954, 1957, 1958, 1961, 1964, and 1965; all of these depict the Western Mutual Ditch within the project area, improved roads to the west and north of the project area, and State Highway 60 to the east of the project area, but the detail available at this scale does not provide any additional data regarding the presence of features or land use in or within the vicinity of the project area. Table 3. Historic Maps Reviewed Map Name Map Type/Preparer Date T4N, R66W GLO/original survey plat, exterior boundaries 1863 T4N, R66W GLO/original survey plat 1865 Map of the Denver Pacific Railway GLO/original survey plat 1869 Greeley, Colorado USGS 1:125,000 -scale quadrangle 1902 Milliken, Colorado USGS 1:24,000 -scale quadrangle 1950 Milliken, Colorado USGS 1:24,000 -scale quadrangle 1951 Greeley, Colorado USGS 1:250,000 -scale quadrangle 1954 Greeley, Colorado USGS 1:250,000 -scale quadrangle 1957 Greeley, Colorado USGS 1:250,000 -scale quadrangle 1958 Greeley, Colorado USGS 1:250,000 -scale quadrangle 1961 Greeley, Colorado USGS 1:250,000 -scale quadrangle 1964 Greeley, Colorado USGS 1:250,000 -scale quadrangle 1965 Historic imagery from NETROnline (2023) for the area dates to as early as 1948 and shows the farmstead in the southeast corner of the project area and the Western Mutual Ditch intersecting agricultural fields in the project area. Very few alterations in land use are noted until 1984, when the southeastern farmstead was reconfigured to a more rectangular shape. Images from 2004 to 2019 show oil and gas infrastructure on the western and northeastern edges of the project area; the northeastern pad and structures are not visible in imagery from 2021. The farmstead in the northern portion of the project area is first shown in imagery dating to 2017. General Area History Weld County was first established in 1861 under the Territory of Colorado (Weld County 2023a). A majority of the county was settled by people of German descent who migrated from Russia in the early 1900s. These immigrants largely first worked on the railroad and in the sugar beet fields. The sugar beet 8 Cultural Resource Support for the Meining Property Gravel Mining Project in Weld County, Colorado industry began in 1902 with the establishment of sugar factories in Greeley and Eaton, and later in Windsor, Fort Lupton, and Johnstown. Weld County is currently the leading area for agricultural products in the state of Colorado and ninth in the United States. It is also the number -one -ranked county in the state of Colorado for cattle, grain, and sugar beet production (Weld County 2023a). The nearby town of Gilcrest, Colorado, was originally the town of Nantes, and was situated along the Union Pacific Railway from 1887 to 1907. In 1907, W.K. Gilcrest, a lumber tycoon from Iowa, became the main owner of property around Nantes and renamed the town in honor of his father, Jacob. K Gilcrest. The town of Gilcrest was incorporated in 1912 and has historically served as a hub for storage of sugar beets and potatoes harvested in the local area. More recently, oil and gas exploration and development within Weld County has become a large component of the economy of Gilcrest (Town of Gilcrest, Colorado 2023). Three parcels (Parcel No. 105730100039, 105730100042, and 105730100040) are within the project area. Parcel No. 105730100039 and 105730100042 are owned by the Central Colorado Water Conservancy District and are zoned agricultural and exempt, respectively. Parcel No. 105730100040 is owned by Brent and Fawn Graybill and is zoned as residential. RECONNAISSANCE SURVEY On November 15, 2023, SWCA completed a reconnaissance survey of the project area to identify cultural resources and potential impacts the project may have on those resources. As a result of this survey, two cultural resources were identified within the project area. The first consists of a segment of the Western Mutual Ditch (5WL2750) that fully incorporates and extends previously recorded segment 5WL2750.4. The second resource, 5WL9705, consists of a newly recorded historic farmstead. 5WL2750.4: Western Mutual Ditch SWCA revisited 5WL2750.4 during the reconnaissance survey on November 15, 2023. The portion of the ditch within the project area consists of an unlined single ditch channel with vertical banks measuring approximately 20 feet wide at the top, 18 feet wide at the bottom, and 5 feet deep. Several areas with erosion control rip -rap are present along the sides of the ditch channel (Figure 5). Both sides of the ditch are lined by a berm that measures approximately 1 feet tall and has been flattened on top as a vehicle access road. The ditch is crossed at regular intervals by metal bridges for the surrounding agricultural field's center pivot irrigation system. Five gate features were observed within the project area. Of the five features, four are currently active (F1, F2, F4, and F5), and F3 appears to be abandoned. The gates are metal and set into concrete collars that lead to field feeder ditches (Figures 6-9). 9 Cultural Resource Support for the Meining Property Gravel Mining Project in Weld County, Colorado Figure 5. View along Western Mutual Ditch near CO Highway 60; view facing west. Figure 6. Fl, water diversion gate; view facing north. 10 Cultural Resource Support for the Meining Property Gravel Mining Project in Weld County, Colorado Cultural Resource Support for the Meining Property Gravel Mining Project in Weld County, Colorado Figure 9. F4 (left) and F5 (right), water diversion gates; view facing north. The Western Mutual Ditch (5WL2750), originally known as the Hewes Cook Ditch, was first appropriated on May 5, 1866, and was adjudicated on April 28, 1883. The ditch was originally constructed by John Hewes and Marshall Cook under water Priority 12 (Colorado's Decision Support Systems 2008). Construction of the original ditch began in 1866. The headgate diverted water from the east side of the South Platte River in Section 11, T3N, R67W. The first iteration of the canal was 2.5 miles long, 6 feet wide, and 20 inches deep. In 1900, The Greeley Tribune described the "Western Ditch" as "the successor to the old Hewes Cook Ditch" (Colorado Historic Newspapers 2024). The newspaper further stated that the ditch was capable of irrigating up to 10,000 acres of land, possessed "the best dam and headgate," and was the most well -constructed ditch between Evans and Denver (Colorado Historic Newspapers 2024). National Register of Historic Places Eligibility Recommendation The Western Mutual Ditch in its entirety was originally found to be not eligible for the NRHP in 1998 with reference to Holleran (2005); that evaluation was reiterated when segment 5WL2750.4 was recorded in 2007 and recommended not eligible (McElhoe et al. 2007; Spath and Corwin 1998). In 2011, SWCA recorded an additional segment of the ditch (5WL2750.6) and recommended the Western Mutual Ditch to be eligible for the NRHP under Criterion A for its role as a pioneer structure established by some of the original gold seekers in the region and its contribution to the development of the agricultural prominence of Weld County in the late eighteenth and nineteenth centuries (Wray et al. 2011). SWCA's recommendation received SHPO concurrence in August 2011. Additionally, during the initial 2007 recording of 5WL2750.4, the segment was recommended as non-contributing to the eligibility of the overall resource due to the significant modifications made to the segment. 5WL2750.4 is still in its original alignment and functions as a water conveyance system for agricultural purposes. Therefore, the segment retains integrity of location, design, and association. The segment has undergone substantial modification from the installation of steel bridges for the irrigation system and the 12 Cultural Resource Support for the Meining Property Gravel Mining Project in Weld County, Colorado erosion control rip -rap. Thus, the segment does not retain integrity of materials, workmanship, setting, and feeling. SWCA recommends that 5WL2750.4 does not support the eligibility of the overall resource, because it lacks multiple aspects of integrity and is no longer reflective of the original construction. 5WL2750 was determined eligible for listing in the NRHP. SWCA did not record or observe anything to alter the eligibility of the resource as a whole. Segment 5WL2750.4 is recommended as not supporting the eligibility of the resource as a whole; therefore, the project will result in no adverse effect to a historic property. Segments that are non -supporting do not require mitigation, and no further work is recommended regarding cultural resources with respect to 5WL2750.4. 5WL9705: Historic Farmstead SWCA newly recorded 5WL9705, a historic farmstead, on November 15, 2023. The four historical buildings within the farmstead consist of a house constructed in 1915, one large and one small outbuilding constructed in 1940, and one outbuilding constructed in 1971 (Weld County 2023b). The 1915 house is a one-story building adjacent to State Highway 60 with a south -facing entrance, a hipped roof, and a basement, with a more recent addition on the west end of the building and a large brick chimney on the north wall of the addition (Figures 10-12). The large rectangular 1940 outbuilding is in the northwest portion of the farmstead area and appears to be a barn or machine shop (Figure 13). No entrances were visible during survey, although one is potentially situated on the western side of the building. The smaller 1940 outbuilding is to the southwest of the large 1940 outbuilding and is possibly a garage; several windows were visible during the reconnaissance survey, but no entrance was identified (Figure 14). The 1971 outbuilding is situated in the southwest corner of the farmstead area and appears to be a machine shed with an opening on the southern side of the building (Figure 15). Figure 10. 1915 house from the north; view facing south. 13 Cultural Resource Support for the Meining Property Gravel Mining Project in Weld County, Colorado Figure 11. 1915 house from the northwest; view facing southeast. Figure 12. 1915 house from the southeast; view facing northwest. 14 Cultural Resource Support for the Meining Property Gravel Mining Project in Weld County, Colorado Figure 13. Large 1940 outbuilding from the northeast; view facing southwest. Figure 14. Small 1940 outbuilding from the southeast; view facing northwest. Large 1940 outbuilding to the right. 15 Cultural Resource Support for the Meining Property Gravel Mining Project in Weld County, Colorado Figure 15. 1971 outbuilding from the southwest; view facing east-northeast. National Register of Historic Places Eligibility Recommendation 5WL9705 is a newly recorded historic farmstead that falls within the scope of Weld County, Colorado Historic Agricultural Context (Mehls and Mehls 1988) and Colorado History: A Context for Historical Archaeology (Church et al. 2007). The site consists of three historic features built before 1956. A review of the BLM GLO land patents revealed that one patent was issued for the land containing the farmstead to John N. Hill in 1875 under the authority of the 1862 Homestead Act. No additional public information regarding John N. Hill is available. The farmstead is visible on the 1948 aerial that covers the area; however, it is not possible to clearly discern the individual buildings on the available imagery (NETROnline 2023). 5WL9705 is not associated with persons or events considered to have made a significant contribution to the broad patterns or local or regional history (NRHP Criteria A and B). The buildings are not representative of a style, nor do they have any distinctive engineering or architectural characteristics and do not meet Criterion C. Finally, the site not only lacks any historic artifacts, but the surface has also clearly been regularly graded and maintained, which has removed evidence of additional surface feature locations. Additionally, historic sites, such as 5WL9705, tend to be limited to surface and near -surface contexts, both of which are limited. Thus, the site does not have the potential to provide meaningful information about late nineteenth and early twentieth-century history in Weld County. The site is therefore recommended to be not significant under Criterion D. The site retains integrity of location, setting, materials, workmanship, and design. The farmstead and surrounding landscape have experienced periods of development and modernization. The site lacks integrity of feeling and association. As a result, 5WL9705 lacks integrity and does not meet any of the NRHP criteria. SWCA recommends the site to be not eligible for inclusion in the NRHP. 16 Cultural Resource Support for the Meining Property Gravel Mining Project in Weld County, Colorado CONCLUSIONS AND RECOMMENDATIONS Given the level of modern agricultural use occurring on this parcel, confirmed by the reconnaissance survey and historical document review, it is unlikely that sediments that retain precontact or early historic archaeological sites remain in the project area. Therefore, no additional archaeological assessment is recommended within the agricultural field in the project area. The Western Mutual Ditch (5WL2750) has been determined eligible for listing in the NRHP. However, the segment within the project area (5WL2750.4) has been previously recommended as not supporting the eligibility of the overall resource. SWCA concurs with the previous recommendation and, as a result, the project will result in no adverse effect to the recorded segment of the Western Mutual Ditch. 5WL9705 is recommended not eligible for the NRHP; therefore, the project will result in no effect to a historic property. SWCA recommends no further work regarding cultural resources for the current project. 17 Cultural Resource Support for the Meining Property Gravel Mining Project in Weld County, Colorado REFERENCES CITED Bureau of Land Management (BLM) 2023 General Land Office (GLO) records. Available at: https://glorecords.blm.gov/default.aspx. Accessed December 13, 2023. Church, Minette C., Steven G. Baker, Bonnie J. Clark, Richard F. Carrillo, Jonathan C. Horn, Carl D. Spath, David R. 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Hedlund 2007 5WL2750.4 Management Data Form. Suncor Energy (U.S.A) Pipeline Company Rocky Mountain Crude System Expansion Pipeline Project. Prepared by Centennial Archaeology, Inc. On file, Colorado Office of Archaeology and Historic Preservation, Denver. McFaul, Michael, Karen Lynn Traugh, Grant D. Smith, William Doering, and Christian J. Zier 1994 Geoarchaeologic Analysis of South Platte River Terraces: Kersey, Colorado. Geoarchaeology: An International Journal 9(5):345-374. Mehls, Carol Drake, and Steven F. Mehls 1988 Weld County, Colorado Historic Agricultural Context. Office of Archaeology and Historic Preservation and Colorado Historical Society, Denver. Natural Resources Conservation Service (NRCS) 2023 Web Soil Survey. Soil Survey Geographic (SSURGO) database. Available at: http://websoilsurvey.nres.usda.gov/. Accessed December 13, 2023. Nationwide Environmental Title Research (NETROnline) 2023 Historic Aerials Viewer. Available at: https://www.historicaerials.com/viewer. 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